FURVERT!

animal_genitalia animal_penis balls big_flare black_hair black_tail equid equine equine_genitalia equine_penis erection fenn.perrox feral flared_penis fur genitals grass grey_body grey_fur hair hi_res hooves horse licking licking_lips male male_feral mammal medial_ring nero_(fenn.perrox)on_grass on_ground penis plant quadruped solo standing tail tongue tongue_out vein veiny_penis watermark