rule 34 2020 anthro artist name balls biped black body black collar black fur black hair black nose black tail bondage bondage bound canid collar dated erection front view fur genitals green eyes group hair handjob hands tied heterochromia hi res jewelry leash leash pull male mammal narrowed eyes navel necklace open mouth pawpads penile penis pink penis pink tongue red inner ear red pawpads riorix sex short hair simple background solo focus spread legs spreading tail tongue yellow balls yellow body yellow eyes yellow fur 7235790