FURVERT!

animal_genitalia animal_noises animal_penis anthro anus aroused balls barn bent_over big_balls big_penis blarf blush brown_balls butt canid canine canine_genitalia canine_penis canis domestic_dog duo equid equine equine_genitalia equine_penis erection flirting genitals hi_res hooves horse knot leaning leaning_forward male male/male mammal medial_ring pawpads paws penis presenting presenting_hindquarters raised_leg spread_butt spreading vein veiny_penis