Rule 34 Dev - abs animal_genitalia animal_penis anthro big_penis brown_fur canid canine canine_penis canis domestic_dog duo ear_piercing erection frottage fur glaring green_eyes grin knot lutrine male mammal mustelid mustelid_penis penis penis_hug penis_size_difference piercing sex simple_background size_difference smile syynx yaoi|3519076344