animal_genitalia
animal_penis
anthro
arjuna
backsack
balls
biped
butt
equid
equine
equine_genitalia
equine_penis
flaccid
genitals
hooves
horse
looking_at_viewer
looking_back
lying
male
mammal
nude
penis
penis_backwards
presenting
presenting_hindquarters
raised_tail
solo
tail
