Rule 34 Dev - 2016 animal_genitalia animal_penis anthro anthro_on_feral anus avilon canine cetacean cetacean_penis claws cum cum_in_mouth cum_inside dolphin duo fellatio feral genital_slit german_shepherd half-closed_eyes larger_male male mammal marine nude oral partially_submerged penis sex size_difference slit smaller_male yaoi zoophilia|2386704504