I have three cats and only two of them wear collars. Toby, he's my tabby doesn't like wearing collars, the first one I brought him, he lost it and then I brought him another one and he keeps taking it off soo I give up on the collar. I have collars on my cats because I think they look cute and it will keep the mice away. The only time a cat can take it off it's collar if it is too loose but you don't want it too tight or the cat would suffocate. There are some cats that don't want to wear any collars and they will never get use to it.