Rule 34 Dev - 2boys all_fours anal canid canine canis cetacean collar condom delphinoid derry dobermann doggy_style domestic_dog from_behind_position gay knot kristakeshi leash male male/male male_only mammal marine mask muscular oceanic_dolphin orca penis pinscher power_bottom pup_mask safe_sex sex toothed_whale yaoi yerkelayh|3724408256