4:3
animal_genitalia
animal_penis
aroused
backsack
balls
big_balls
big_flare
big_penis
big_unflared_glans
butt
disembodied_penis
equid
equine
equine_genitalia
equine_penis
erection
flaccid
flared_penis
genitals
half-erect
hi_res
horse
male
mammal
medial_ring
naughty_ram
penis
sheath
vein
veiny_penis
