The Manx is a CFA recognized cat breed that is believed to have originated on the Isle of Man, off the coast of Great Britain. Manx cats are predominantly known for their characteristic lack of tail or in many cases a “rump bump”. | The Manx is a CFA recognized cat breed that is believed to have originated on the Isle of Man, off the coast of Great Britain. Manx cats are predominantly known for their characteristic lack of tail or in many cases a “rump bump”. |