FURVERT!

anal animal_genitalia animal_penis anus asinus balls bending_of_the_rectum big_penis black_balls black_body black_fur black_hair butt donkey dunstanmarshall equid equine equine_anus equine_genitalia equine_penis erection feral fur gaping gaping_anus genitals grey_body grey_ears grey_fur hair hi_res male mammal mohawk penis perineum puffy_anus raised_tail rear_view solo tail