animal_genitalia
animal_penis
anthro
anus
balls
biped
ear_piercing
equid
equine
equine_genitalia
equine_penis
flaccid
fully_sheathed
gard3r
genitals
hair
hooves
horse
looking_at_viewer
lying
male
mammal
nipples
nude
on_back
outside
penis
penis_tip
piercing
sheath
smile
solo
teeth
underhoof
