Hairless Dogs (and Cats)

Wikipedia reports that there are "several" breeds of hairless dog, but it only seems to give pages to two of them: the Mexican and the Peruvian.

There was also a Mexican hairless cat, which Wikipedia describes as "a purported breed of cat first documented in 1902 by Mr. E. J. Shinick, who owned a pair of hairless cats." Further down the page is describes the variety as "extinct".