Rule 34 Dev - all_fours anatomically_correct anatomically_correct_anus animal_genitalia animal_penis anthro anus backsack balls bed bedroom big_balls brown_body brown_fur brown_hair butt equine_anus equine_genitalia equine_penis erection eyebrows fingers fur furniture genitals hair hooves inside looking_at_viewer looking_back looking_back_at_viewer male mane medial_ring muscular muscular_anthro muscular_male nude nude_male on_bed penis perineum pillow presenting presenting_anus presenting_balls presenting_hindquarters puffy_anus raised_tail rear_view saggy_balls smile solo tail_wraps two_tone_anus underhoof window wraps bela987 equid equine horse mammal hi_res|72172136