Well Tim, last week I.O. and I went to an open house at an alpaca farm. Included was a spinning demonstration. In addition to alpaca fur one of the spinners was spinning rabbit fur. I asked her about using cat hair (which I have in abundance). She was purr-fectly serious when she replied that if it was long hair it would probably work fine. Wonder if I have enough fur to make an afghan? Convert the cats into dogs to help keep warm this winter???