FURVERT!

animal_genitalia animal_penis anus balls beard ben300 big_balls big_butt black_hair black_tail brown_body brown_fur butt dock_(anatomy)equid equine equine_anus equine_genitalia equine_penis erection facial_hair feral fur genitals grin hair horse looking_at_viewer looking_back looking_back_at_viewer male mammal mane mustache penis presenting presenting_hindquarters puffy_anus raised_tail rear_view smile solo tail tail_anus