rule 34 2017 4 toes anthro backsack balls barefoot biped black nose brown eyes brown fur brown stripes brown tail bull terrier canine claws collar ear piercing fur grey background grey claws hi res kneeling male male only mammal multicolored fur multicolored nose multicolored tail neltruin nude open mouth pawpads piercing pink nose pink tongue rear view royce hurst signature simple background solo striped fur striped tail stripes terrier toe claws toes tongue tongue out two tone nose white balls white fur white tail 3037755