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I really like this kind of e-collar. I have two of them. They allow her to eat and walk without difficulty, and they're much easier to adjust. You'll want to keep her from running and jumping. Look after her incision. It should stay pretty clean on its own. Be prepared for the other cat to not recognize her when she comes home. She'll smell funny to the other cat. Watch that the other cat doesn't mess with her incision site. Otherwise, your vet will give you papers telling you everything you need to know.