animal_genitalia
animal_penis
anthro
anus
apple-faced
backsack
balls
biped
butt
dock_(anatomy)
equid
equine
equine_genitalia
equine_penis
erection
flared_penis
fur
genitals
hay
hi_res
hooves
horse
luckystallion13
male
mammal
medial_ring
penis
perineal_raphe
perineum
raised_tail
raphe_(anatomy)
solo
tail
tail_anus
vein
veiny_penis
