FURVERT!

anal anal_penetration animal_genitalia animal_penis anus balls black_body black_fur black_mane black_markings black_stripes black_tail blue_eyes blue_markings blue_tail canid canine canine_genitalia canine_penis dipstick_tail duo equid equine equine_genitalia equine_penis erection eyes_closed feral feral_on_feral feral_penetrated feral_penetrating feral_penetrating_feral fur genitals glistening glistening_eyes grass heatherwolf horse interspecies knot knotted_penis large_penetration male male/male male_penetrated male_penetrating male_penetrating_male mammal mane markings mouth_closed penetration penile penile_penetration penis penis_in_ass pink_penis plant sex side_view simple_background stretched_anus striped_back striped_legs striped_markings striped_tail stripes tail tail_markings white_background white_body white_fur white_markings white_tail yellow_tail