FURVERT!

animal_genitalia animal_penis anthro anus backsack balls big_balls big_penis black_anus black_penis butt ear_piercing equid equine equine_anus equine_genitalia equine_penis erection facial_hair genitals goatee hand_on_butt holding_butt horse looking_at_viewer looking_back male mammal mottled mottled_genitalia mottled_penis narse nude open_mouth penis piercing presenting presenting_hindquarters puffy_anus raised_tail rear_view solo tail tail_anus tail_wraps vein wraps