FURVERT!

aaron_d'verse against_surface against_wall alhaanshi anal anal_penetration anthro anus balls brown_body brown_fur buckteeth butt colored_nails duo ear_piercing ear_tag equid equine eyes_closed fur genitals grey_body grey_fur horse interspecies male male/male male_penetrated male_penetrating male_penetrating_male mammal murid murine nails penetration piercing rat rodent sex teeth