kawagogo spiked studded dog collar, anti-bite pu leather collar for small medium large dogs, pitbull mastiff bully boxer collar (l,brown) kawagogo the anti-bite collar is made of high-quality pu leather, and with zinc alloy mushroom nails, which can not only play a decorative role but your dog will not scratch, it can prevent dogs from fighting others, biting the neck, playing a protective role.