3d_(artwork)
anthro
athletic
back_muscles
brown_body
brown_fur
butt
digital_media_(artwork)
equid
equine
erection
fur
genitals
glans
grey_background
hooves
horse
humanoid_genitalia
humanoid_penis
male
mammal
muscular
nude
penis
pose
realistic_penis_size
simple_background
solo
teak_(thirteeenth)
thirteeenth
