[NSFW] Extensive tagging guide

CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
The intent of this thread is to showcase various different tags that are in use on Furbooru. Some of them are more important than others. The list of tags present in this guide is not meant to be complete or comprehensive. Treat it more like a list of most common examples. The thread contains NSFW tags and descriptions but no NSFW example images.
 
You can use the table of content to jump to different posts in this thread that group together similar tags.
 
When tagging a post appropriate rating tags are mandatory to even upload. They are already extensively described here so I won’t be repeating that.
 
Always tag the artist if you know their name, otherwise use artist needed.
 
All other information is contained below this post. Searching through this thread with CTRL+F for specific things might be useful ;)
 
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. GENDERS
     
    male - masculine character with a penis or cloaca/genital slit  
    female - feminine character with a vagina or cloaca  
    intersex - character that has any genitals not matching their body  
    •• intersex male - male character with a vagina, cuntboy  
    •• intersex female - female character with a penis, dickgirl  
    •• herm - use for both feminine and masculine characters with both a penis and a vagina (to search for only feminine herms use “herm, -male herm”)  
    •• maleherm - use for masculine characters with both a penis and a vagina
     
    ambiguous gender - when the gender can’t be determined because the character is not visible entirely or because it’s a feral with no visible genitals or the species has no visible sexual dimorphism (unlike with peacocks or lions)
     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. ORIENTATIONS
     
    Depictions of sexual or romantic situations between characters of same or different genders. Note that orientation tags are not mean to describe the sexual orientation of a character on a solo image. They should be used only when there is interaction between characters visible.
     
    Use any of the genders from the post above in the format:
gender A/gender B
e.g. male/female, male/male, intersex female/intersex male
 
For some combinations of genders there are also tags like  
gender A on gender B
and
gender B on gender A
those will all imply a common gender A/gender B tag. They are used to described which character is the one on top of another, for example intersex female on male and male on intersex female
 
If one character is involved with characters of varying genders simultaneously use also the tag bisexual
 
For pictures with only one character use them in the format:
solo gender C
e.g. solo female, solo herm
 
Complete list of orientation tags is here: https://pastebin.com/HgtLcrNC
 
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. FORMS
     
    anthro - bipedal characters that act and move like humans and have body shape similar to a human, but they are neither humans nor humanoids. Sometimes they can still have paws as their hands.  

     
    feral - animals in their animal (feral) form, but they still might speak or use their limbs to grab things.  

     
    taur - character that walks on four legs but also has hands (note that centaurs are both taurs and humanoids because they have human upper body)  

     
    lamia - snake-like characters with upper body of human, humanoid or animal other than snake and lower body of feral snake  
     
    if the upper body is of anthro snake use the tag naga instead.
     
    human - regular Homo sapiens sapiens
     
    humanoid - when it has a human face and no fur/feathers/scales on at least part of the body (e.g. waist up) then it probably is a humanoid and not anthro.  

     
    semi-anthro - when it is impossible to make a clear distinction between anthro and feral. Mainly in simplistic styles and some Pokemon. If a character is bipedal but they have animal like-body shape and don’t have hands but rather paws or hooves they might be semi-anthro.  

     
    ambiguous form - when the form can’t be determined because only part of a character is visible. If the entire character is visible and it still is not possible use semi-anthro.  

     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. FORM RELATIONSHIP
     
    Depictions of sexual or romantic situations between characters of same or different forms.
     
    Two types of tags exist:  
form A/form B
and
form A on form B
or
form B on form A
 
The first type (X/Y) is a common tag for the X on Y and Y on X tags. X on Y/Y on X tags specify which form is on top.
 
anthro/anthro  
anthro/feral  
•• anthro on feral  
•• feral on anthro  
anthro/taur  
•• anthro on taur  
•• taur on anthro
 
human/anthro  
•• human on anthro  
•• anthro on human  
human/feral  
•• human on feral  
•• feral on human  
human/taur  
•• human on taur  
•• taur on human  
feral/feral  
•• feral on taur  
•• taur on feral
 
taur/taur  
taur/human  
•• taur on human  
•• human on taur
 
This list is not complete as not every type of form on form interactions has art uploaded
 
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. SPECIES
     
    Usually the species tags are constructed as shown below, but not all levels are always present (especially for fictional species, which are not in the real life classification).
     
    ○ highest level group for both fictional and real animals (mammal, bird, reptile)  
    ○○ high level group in the rank of order/suborder/family (dinosaur, canine, feline, rodent)  
    ○○○ genus (marten) or common name for species from different genera (fox, badger)  
    ○○○○ species (red fox, golden eagle, European badger)  
    and sometimes, if a species has them:  
    ○○○○○ breed or prominent color morph (husky, maine coon, silver fox)
     
    In case of the more popular species you should not be worried about all levels when tagging, the implications adding necessary tags should be already in place. For example:  
    full  
    When adding the tag husky to a picture there will be also “dog, canine, mammal” automatically added to that picture when the changes are applied because this tag implies those three other tags.
     
    There are no tags like “avian” or “scalie” in use (they are aliased to “bird” and “reptile” respectively). Fictional species should be tagged with what they are based on + fictional species.
     
    Examples:
     
    mammal -> canine -> fox -> red fox  
    mammal -> feline -> cat -> maine coon  
    reptile -> snake -> rattlesnake -> timber rattlesnake  
    bird + fictional species -> gryphon -> blue jay gryphon  
    reptile + fictional species -> dragon -> night fury
     
    mammals  
    •• canine, feline, marsupial, etc.  
    •• fictional races with fur  
    •• human  
    birds  
    •• gryphons  
    reptile  
    •• dinosaur  
    •• fictional creatures like dragons, argonians etc.  
    amphibian  
    fish  
    insect  
    •• arthropod
     
    monster  
    alien
     
    robot  
    animate machine - living machine
     
    fictional species - for species that don’t exist in real life, original species, mythological species etc.
     
    species needed - when the character is of some species, but you just don’t know which one.
     
    ambiguous species - when the species can’t be determined, e.g. because the character is seen at extreme close-up or is drawn with no details.
     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. **CHARACTER COUNT (QUANTITY) **
     
    (Shorthands are given in brackets, they are aliases of the their main tag, all start with “q” for quantity)
     
    a) General type:  
    solo (q1) - only one character  
    duo (q2) - exactly two characters  
    group (q4) - three or more characters  
    •• trio (q3) - exactly three characters  
    •• large group (q10) - ten or more characters
     
    b) Gender specific  
    solo male (q1m) - only one character, male  
    duo male (q2m) - exactly two characters, both male
     
    solo female (q1f) - only one character, female  
    duo female (q2f) - exactly two characters, both female
     
    solo intersex male (q1im) - only one character, intersex male  
    solo intersex female (q1if) - only one character, intersex female  
    solo herm (q1h) - only one character, herm  
    solo maleherm (q1mh) - only one character, maleherm
     
    c) Sexual context:  
    group sex - sex involving more than two individuals.  
    •• threesome - exactly 3 characters having sex with each other.  
    •• foursome - exactly 4 characters having sex with each other.
     
    •• orgy
     
    d) Other
     
    offscreen character - when there is a character that is not fully visible  
    •• faceless male / faceless female - when there is male or female character whose face is not visible or blank
     
    ambient wildlife - when there are animals that are not important to the overall scene, e.g. birds flying in the distance  
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. BODY PARTS
     
    a) The not safe ones
     
    animal genitalia  
    •• canine penis / equine penis (knotted equine penis) / cervine penis / etc.  
    •• canine vulva / equine vulva / feline vulva / etc.  
    •• canine anus / equine anus / etc.  
    (for more comprehensive list check which tags imply animal genitalia here)
     
    penis - male external reproductive organ  
    •• foreskin - loose part of skin that covers the end of a penis  
    ••• unretracted foreskin - foreskin covering entire penis head (glans)  
    ••• partially retracted foreskin - foreskin covering some part of the penis head (glans)  
    ••• retracted foreskin - foreskin not covering the glans at all  
    •• circumcised - penises that had their foreskin removed
     
    •• flaccid - penis that is not in the state of arousal  
    •• semi-erect - in between flaccid and erect  
    •• erection - when penis is firm, engorged, and enlarged  
    ••• flared - when the tip of equine penis is swollen up during arousal
     
    •• urethra - the orifice at the end of urinary tract  
    •• knot - spherical area of erectile tissue (like in canines)  
    •• barbed penis - penis with barbs (like in felines)  
    •• medial ring - ring on equine penis shaft
     
    •• multi penis - character that has more than one penis  
    ••• hemipenis - character with two penises with common base (found in e.g. reptiles)  
    ••• diphallism - character with two penises with separate bases
     
    •• prehensile penis - penis that can move a bit like a limb  
    •• tapering penis - if the shaft thickness gradually gets lower from base to tip
     
    •• glazed penis - penis covered in cum, precum, saliva, vaginal secretions or other sexual fluids.
     
    vagina - part of female internal reproductive system located between vulva and cervix  
    •• cervix - located between between vagina and uterus  
    uterus - located behind cervix
     
    vulva - external female genitalia  
    •• clitoris - part of vulva  
    ••• clitoral hood - equivalent of a foreskin, covers the clitoral glans  
    •••• prehensile clitoral hood - when the clitoral hood is prehensile (like in sergals)  
    •• urethra - the orifice at the end of urinary tract
     
    genital slit - sheath that is not sticking out outside of the body, can look like vulva if penis is not sticking out of it.
     
    claspers - external male reproductive organ in some species of fish (e.g. sharks)
     
    cloaca - common opening for digestive, urinary and genital tracts present both in males and females
     
    anus - the very end of digestive system if it is a separate orifice.
     
    taint - place between anus and balls
     
    featureless crotch - crotch with no genitals depicted (SFW)
     
    nipples - raised region of tissue on the surface of the breast, applies for both males and females
     
    breasts - organs that form a prominence on the front of a female chest and contain the mammary glands  
    •• areola - the part of skin around a nipple  
    ••• big areola  
    ••• areola slip - when areola is visible but the nipple is covered  
    •• featureless breasts - breasts with no nipples and no aureola (SFW)
     
    •• cleavage - the place between breasts visible when they are partially covered
     
    •• sideboob - breast seen from the side  
    •• underboob - breasts seen from below
     
    •• multi breast - more than two breasts on chest or more that 6 teats/breasts in crotch and abdomen area.
     
    udders - equivalent of breasts located in crotch area, have two nipples per one “breast”  
    teats - equivalent of breasts located in crotch area, have one nipples per one “breast”
     
    ovipositor - organ used to lay eggs
     
    b) The safe ones
     
    Tags describing what the character is covered in:  
    fur  
    feathers  
    scales
     
    hair  
    •• mane
     
    Body parts:
     
    tail  
    •• short tail  
    •• long tail  
    •• big tail  
    •• tail fluff  
    •• hairless tail  
    •• prehensile tail
     
    •• leonine tail  
    •• fish tail
     
 
 
•• raised tail  
•• tail aside  
•• tail wraps
 
teeth  
•• sharp teeth  
••• fangs  
••• sabertooth (anatomy)
 
feet - the end part of a leg  
•• paws - mammal feet  
•• hooves - equine and cervine feet  
••• cloven hooves - hooves that are split into two or four parts  
•• bird feet  
•• reptile feet  
•• human feet  
••• barefoot
 
soles - the bottom side of feet  
•• underpaw  
••• paw pads  
•• underhoof  
••• frog (hoof)  
•• bird soles  
•• reptile soles
 
horns  
horn - use when there is only one horn  
antlers
 
fins
 
claws  
•• talons - avian claws, for the entire foot of bird type use bird feet
 
fluffy  
•• ear fluff / cheek fluff / neck fluff / chest fluff / head fluff / pubic fluff / tail fluff / shoulder fluff / leg fluff / see more here
 
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. SEXUAL POSITIONS AND ACTS
     
    missionary position  
    69 position  
    from behind  
    scissors position  
    cowgirl position  
    reverse cowgirl position  
    train position
     
    Not specifically referring to sex but helpful:
     
    face to face  
    butt to butt
     
    sex - sexual contact with genitals or anuses (even if not directly visible)
     
    penetration - when a penis, tentacle, finger or other body part is inserted into body orifices.  
    •• anal penetration  
    •• oral penetration  
    •• vaginal penetration  
    •• cloacal penetration  
    •• genital slit penetration  
    •• sheath penetration  
    •• urethral penetration
     
    docking - inserting a penis into foreskin/sheath/genital slit of other character
     
    touching tips - when the tips of penises are touching
     
    thrusting - act of moving the penis/tentacle back and forth while penetrating a body orifice.
     
    ••tail penetration - tail used for penetration
     
    •• double penetration - when a character is penetrated by two penises or tentacles at once  
    ••• double anal / double oral / double vaginal
     
    •• bilateral penetration - a character with two or more penises penetrating two different partners/orifices at the same time.
     
    •• triple penetration - when a character is penetrated by three penises or tentacles at once  
    ••• triple anal / triple oral / triple vaginal
     
    •• trilateral penetration - a character with three or more penises penetrating three different partners/orifices at the same time.
     
    •• balls deep - when the entire penis shaft up to the balls is used during penetration.
     
    insertion - when a toy is inserted into body orifices.  
    •• anal insertion  
    •• oral insertion  
    •• vaginal insertion  
    •• cloacal insertion  
    •• genital slit insertion  
    •• sheath insertion  
    •• urethral insertion
     
    sex toy  
    •• dildo - sex toy in the shape of a penis, tentacle or a tongue  
    ••• human dildo - human penis shaped  
    ••• animal dildo - dildo in the shape of animal bits  
    •••• equine dildo / canine dildo / etc.  
    ••• double-headed dildo - with two usable heads  
    ••• cumtube - when a dildo has a tube attached used to pump fake cum through the toy  
    •• anal beads - sex toy consisting of multiple spheres or balls attached together in a line  
    •• penetrable sex toy - sex toy intended to be penetrated  
    ••• fleshlight - penetrable sex toy with a blind hole  
    ••• onesie penetrable sex toy with a through hole  
    •• buttplug - designed for anal insertion, similar to a dildo but shorter and with a wide base  
    •• vibartor - vibrating sex toy, might be a type of dildo  
    •• strapon - sex toy that can be worn by a character and used like an artificial penis  
    •• transparent sex toy
     
     
    oral - sex or masturbation involving use of mouth for stimulation  
    •• licking penis - when the penis is licked  
    •• blowjob - oral sex involving sexual stimulation of a penis using the mouth (but not solely the tongue), fellatio  
    ••• autofellatio - masturbation  
    ••• deepthroat - deep oral penetration  
    •• cunnilingus - oral stimulation of vulva  
    ••• autocunnilingus - masturbation
     
    grinding - genital rubbing without penetration, either against partner’s body (except hotdogging (?), frotting, tribadism and cloacal kissing) or an object (see this thread for details: https://furbooru.org/forums/tagging/topics/nsfw-grinding-definition-and-connected-tags-with-visual-examples )
     
    hotdogging - act of rubbing a penis between butt cheeks  
    frotting - act of rubbing penises together  
    tribadism - act of rubbing vulvas together  
    cloacal kissing - act of rubbing cloacas together
     
    handjob - penis stimulation using hands  
    footjob - penis stimulation using feet  
    •• pawjob - penis stimulation using paws  
    tailjob - penis stimulation using tail  
    tonguejob - penis stimulation using tongue  
    wingjob - penis stimulation using wings  
    boobjob - penis stimulation using breasts
     
    (Above tags can be applicable for both masturbation and sex.)
     
    masturbation - touching or penetrating themselves or inserting something into own body in order to pleasure themselves  
    •• autofellatio - blowjob on own penis  
    •• autocunnilingus - cunnilingus on own vulva  
    •• tail penetration - tail used for penetration during masturbation (this tag apples also to sex)
     
    tentacle porn - porn involving tentacles  
    •• tentacles on female  
    •• tentacles on male  
    Note that tentacles do not count as a character unless they are attached to a specific character.
     
    vaginal secretions - natural fluid that lubricates the vagina, equivalent of male precum  
    •• vaginal secretions trail
     
    precum - clear fluid that is emitted from the urethra of the penis during sexual arousal
     
    cum - thick white fluid containing spermatozoa that is ejaculated by the male genital tract  
    •• cumming - ejaculation, cumshot  
    ••• internal cumshot - cumshot that happens inside of a body orifice  
    •• dripping cum  
    •• cum inside - when cum is inside of a body  
    •• cum string  
    •• cum on face - facial  
    •• cum on self - cum on own body  
    ••• autofacial - cum on own face  
    •• cum on penis (glazed penis) / cum on breasts / cum on balls / cum on butt / cum on tongue / cum on body / for comprehensive list see this link  
    •• cum on floor / cum on screen  
    •• excessive cum - overly large amounts of cum
     
    creampie - aftermath of cumming inside when cum is dripping out of the body orifice  
    •• anal creampie  
    •• oral creampie  
    •• vaginal creampie  
    •• cloacal creampie
     
    licking  
    •• licking lips / licking face / licking penis / licking balls / licking paws / licking self / for more see this link
     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. SIZES
     
    Characters  
    micro - tiny character  
    macro - gigantic character  
    size difference - one character larger than other character
     
    Body parts  
    They usually go as follows (where X is the body part name):
     
    • small X - smaller than average  
    X - average/normal size  
    • big X  
    • huge X  
    hyper X - when a character has X that are/is larger than physically possible and are/is totally out of proportions in the relation to the rest of the body
     
    impossible fit - for situations where one object/character fits into other object/character in a way that is not realistically possible
     
    For details see descriptions for specific body parts.
     
    penis size difference - penis of one character larger than penis of other character
     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
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Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. POSITIONING  
    a) Entire character:
     
    lying down  
    •• prone - on belly  
    ••• sploot - prone with limbs spread  
    •• on back  
    •• on side
     
    face down ass up
     
    leaning forward  
    leaning back
     
    sitting  
    standing  
    walking  
    jumping
     
    b) Body parts:
     
    hug - one character embracing another  
    •• wing hug / leg hug / penis hug / tongue hug  
    •• cuddling - more intimate form of hugging
     
    presenting - character is showing their butt and/or genitals to the viewer
     
    head between breasts  
    raised head
     
    spread wings and folded wings / spread legs / spread arms / spread butt / spread anus / spread vulva / spread cloaca
     
    arms behind back  
    arms behind head  
    arms above head  
    crossed arms
     
    raised hands
     
    •hand on…  
    •• hand on penis / hand on hip / hand on butt / hand on leg / hand on face / hand on vulva / hand on breasts / hand on tail / hand on abdomen (belly=abdomen?) / snout / chest / hand on balls / hand on shoulder / hand on horns / (see the rest here)
     
    holding  
    •• hand hold - when something is held using hands  
    •• holding hands - when characters are holding their hands together
     
    floppy ears - ears pointed down  
    ears laid back - ears pointed backwards
     
    • looking…  
    •• looking at you / looking back / looking back at you / looking at each other / looking up / looking down / looking at something / for more check this page
     
    • penis related position tags:  
    •• penis on face  
    •• penis on head  
    •• poking out - when a penis is poking out from under clothing intended to cover it  
    •• penis tip - when only the tip of the penis is poking out of the sheath  
    •• just the tip - when only the tip of the penis is used during penetration  
    •• 180 penis - when a penis is positioned parallel to the character’s legs with its tip pointing towards the character’s feet
     
    • balls related position tags:  
    •• balls on face  
    •• balls on floor  
    •• resting balls (possibly balls on floor can be aliased into it)
     
    ––––––––––  
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. VIEWS
     
    front view - character seen from the front  
     
    rear view - character seen from the back  
     
    side view - character seen from the side  
     
    low angle - when the view is from a point located at a low position (looking up at something)  
     
    high angle - when the view is from a point located at a hgih position (looking down at something)  
     
    top view - view from directly above  
     
    bottom view - view from directly below  
     
    three-quarter view - character seen at an agle, either from front or from rear (use with front view and rear view)  
    >>4378s (merged)
     
    pov - general tag for images that depict a view from a point of view of some character present in the image.  
    •• male pov - seen from male point of view  
    female pov - seen from female point of view  
    •• dominant pov - seen from dominant character point of view  
    •• submissive pov - seen from submissive character point of view  
    ••• blowjob giver’s pov - seen from the point of view of a character giving a blowjob  
    ••• pov facial - seen from the point of view of a character getting a facial
     
    internal view - view from inside a body or that shows what is going on inside of a body from the outside
     
    frequently paired with:
     
    picture-in-picture - smaller drawing within a drawing that shows what is not visible in the main picture, might show internal view, other angle, etc.  
    cutaway - when character’s body (or an object) is locally drawn as transparent to show what is happening inside  
    transparent body - when the body is transparent or semi-transparent as a feature of the character
     
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. OTHER
     
    indoors / outdoors
     
    signature - when the artist signature is present  
    watermark - when a watermark is present  
    •• obtrusive watermark - when the watermark is obstructing the main focus of the image
     
    alpha channel - images with any transparency or semi-transparency  
    •• transparent background - when the entire background is transparent
     
    white outline - when there is a white outline around something
     
    alternate version - for other versions of the same image made by the same artist  
    edit - for edits not made by the original artist  
    part of a set - for many images forming one set
     
    high res / low res
     
    animated  
    •• gif  
    •• webm  
    ••• sound  
    ••• no sound  
    •• frame by frame - when each frame was drawn by a human and not generated on computer
     
    3d - aplicable for art and animation
     
    chain - the fashion one  
    chains - the dungeon/bondage ones  
    ––––––––––  
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CruFox
The 1% - Hit 1% of Uploads Milestone for a year
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Tag Master - Exceptionally Good and Proficient Tagger
Derpy Fur - Prevented Furbooru's terrible fate in April of 2021.
Dedicated Lifter  - Uploaded over 5k art pieces
Seedling - Gave the site life with many uploads during its first months
Heavy Lifter -
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.
Tag Lover - Good and Proficient Tagger

Moderator
I like tags
  1. COLOR TAGS SHORTHANDS
     
    Shorter aliases for long color tags for body, background, fur, feathers and scales. They are composed from 4 letters, the first two for color name and the last two for the thing that is in this color.
     
    Colors:
     
    bk - black  
    bl - blue  
    br - brown  
    cr - cream  
    gn - green  
    gy - gray  
    mg - magenta  
    or - orange  
    pp - purple  
    pk - pink  
    rd - red  
    tl - teal  
    tn - tan  
    wh - white  
    yl - yellow
     
    tt - two toned for body, fur and hair  
    mc - multicolored for body, fur and hair
     
    Things that have that color:
     
    bd - body  
    bg - background  
    fr - fur  
    ft - feathers  
    sc - scales
     
    So for example instead of writing “yellow feathers” you can write “ylft” or instead of “orange fur” you can write “orfr” and because those tags are aliased they will be changed into the proper tag. Example: blsc
Erhannis
Birthday Fur - Joined within the first year of the site operation and has had significant amount of activity as of June 1, 2021.
Founder Artist - For artists who had 75+ uploads before the site hit 50,000 uploads.
Seedling - Gave the site life with many uploads during its first months
Artist -
Silver Piece - Silver Supporter on Patreon
Astra - Helped choose the name for our mascot - Astra.
Passing of the Eclipse - Joined within the first month of public opening and has had at least some activity as of August 3, 2020.

Question: I’ve been operating on the assumption that sideboob and underboob referred to the zones of the boob that were exposed, in the same manner as cleavage, not the direction from which they were viewed. For instance,

and
,
respectively. However, the description given here seems to imply it’s more “does the character have boobs, and are we viewing them from [angle]?”. (I’d have expected viewing angle to be taken care of by dedicated tags such as side view.)
In actual usage, it looks like underboob is used in the “zone” sense, but sideboob is sometimes used solely in the “angle” sense, such as in
Personally, it makes more sense to me for both to be used strictly in the sense of “zone of the boob that is exposed”, independent of viewing angle, since we already have tags for viewing angle and don’t have other tags for exposed-boob-zone classification - but, could we get an official ruling on it?
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