We've had cats all my life, some indoor and some outdoor, you can usually tell early if they are wise enough. We had a cat called socks who was not intelligent at all, we always had outdoor cats before her, she escaped twice and got stuck in a tree each time, overnight in the rain. We tried harder to keep her in after that because we knew it didn't suit her. She got out again after she had turned a year old and got herself run over and died.
We knew it wasn't right for her to be out and that confirmed it. I still miss her all the time, her death really had a bad effect on me.
