Cornish Rex - no hair except for down. Most breeds of cat have three different types of hair in their coats: the outer fur or "guard hairs"

American Wirehair - first wirehair cat appeared as a random cat mutation among a litter of six born to two barn cats.

American Polydactyl (a pedigree form of Hemingway Cat/Mitten Cat)

American Curl - unusual ears, which curl back from the face toward the center of the back of the skull

American Bobtail - stubby "bobbed" tail about one-third to one-half the length of a normal cat's tail.