FURVERT!

animal_genitalia animal_penis anthro anus backsack balls big_butt brown_body brown_fur butt equid equine equine_genitalia equine_penis fur genitals grey_hair grey_tail hair hi_res hooves horse male mammal medial_ring meheheehehe nude penis penis_backwards perineum presenting presenting_hindquarters raised_tail rear_view simple_background solo tail tail_anus underhoof yellow_background