rule 34 ailurid anthro arm around waist balls black body black fur black penis brown body brown fur canid canine canis comparing comparing penis dado463art daven domestic duo erection floppy ears fluffy fluffy tail foreskin fur genitals girly green eyes high angle view humanoid genitalia humanoid penis male malemale mammal markings nude penis penis size difference pink penis raised tail red panda side by side standing striped markings striped tail stripes tail tail markings 7239932