If there's a dog breed that looks like it was sculpted by a philosopher who really thought hard about skin, it's the Shar Pei. That extraordinary wrinkled coat, those deep-set eyes peeking out from folds upon folds of loose skin, and a demeanor that manages to be simultaneously regal and goofy — the Shar Pei is one of nature's most striking canine creations. One of the oldest dog breeds in...