This morning I was telling my daughter about the creatures called "Cattails" that Larry Niven invented for World out of Time.
I remember enjoying that book a lot but more than anything the description of the genetically modified cat/snake hybrid stuck with me. It had the head of a cat and a fur covered snake body with cat paw leather on its underside. There's a picture of one on the cover of the book.
Well, I just had to track those Wormbunnies down for you and you will find them here!