Rule 34 Dev - anthro bent_over blue_nose blue_tongue collar dominant dominant_male duo erection foreskin fur genitals green_eyes grey_body grey_fur humanoid_genitalia humanoid_penis leash male male/male penis pink_nose submissive submissive_male tongue whiskers knox_(artist) knox_(otter) salmy cheetah felid feline mammal mustelid otter hi_res|6943263355