rule 34 2021 animal genitalia animal penis black nose brown body brown fur canid canine canine penis canis cheek tuft chest tuft claws colored digitigrade dipstick tail facial tuft feral finger claws fur genitals half erect heart inner ear fluff leaping licking licking lips male mammal markings penis penis tip quadruped signature simple background solo tail markings text toe claws tongue tongue out toots tuft url whiskers white background white body white fur wolf 5731164