The group of words associated with cat (catt, cath, chat, katze) stem from the Latin catus, meaning domestic cat, as opposed to feles, or wild cat.
"Of all the [cat] toys available, none is better designed than the owner himself. A large multipurpose plaything, its parts can be made to move in almost any direction. It comes completely assembled, and it makes a noise when you jump on it."
Stephen Baker