A dog's crotch is equivalent to a human's gnashing of teeth. It is caused by the protrusion of the upper or lower gums. Such a dog's mouth cannot be completely closed together. Most of the pet's bunions are hereditary, and only a few are acquired. The parents of dogs with bunions will have this gene and then pass it on to the next generation. Di Baotian's dogs look more cute and cute than normal dogs. If you have Di Baotian dogs at home, please don't dislike them.