Sylvester was a good outside cat for a while, but when we moved to our current home he became an indoor cat, and when we let him out on his own, after five years he had turned into such an old grumpy a-hole that he wasn't allowed back out again. He was nasty to absolutely everyone, and never even asked for us to open the front door for him. He was probably more happy with the veranda and easy access to the cat tree!