You usually don't bother stuffing a small tail. Just dry it. You might try putting a wire inside the tail so you will have something to attach it to the keychain with.

So I have a pet cat who lives outdoors and hunts mice, rats, and other small critters. Earlier today I saw that he killed a chipmunk. I really liked the color fur it had and i was wondering if the tail is able to be stuffed. If it is, I want to put it on a keychain. If any one out there knows how to do this stuff let me know.