Like a few of the ancient breeds (including their relatives, Chow Chows), Shar-peis have black mouths. As with Chow Chows, it was believed in ancient times that the dark mouth, exposed when barking, helped to ward off evil spirits.
Shar-peis are highly protective animals. They are considered an "ancient breed", along with three others (including Chow Chows, which are from the same family), and have been bred for hundreds of...