I have the first ever cat that is not affected ever by cat nip. Today I took out cat nip for the first time since I got her. She came to live with me like early to mid Ausgust (cant remember exactly). Anyways so I took it out to see if she would actually play if I gave her some cat nip. I have seen her play one time since she came here. That was yesterday and she only slapped at the ball twice before wandering off. Anyways. So I put some down on the floor. She walks over sniffs at it for a little while then strolls off! Kitten went crazy and was playing like a crazy cat. I let Lily have some too but she doesnt get wild she jus rolls around on it and gets really sweet. Does anyone else have a cat that isnt affected by cat nip? Also what exactly causes them to go crazy over cat nip?