FURVERT!

anatomically_correct anatomically_correct_anus animal_genitalia animal_penis anus balls black_balls black_border black_penis border butt equid equine equine_balls equine_genitalia equine_penis equine_tail feral flared_penis genitals glistening glistening_eyes grey_body grey_tongue half-erect heiken horse laser_(artist)male mammal medial_ring open_mouth penis presenting presenting_anus puffy_anus raised_tail simple_background solo tail tail_anus text tongue url vein veiny_legs veiny_muscles veiny_thighs