Here in IA we have a real tree, it's really lush too. My little brother has his own full of NASCAR and Cars ornaments. The cats just leave it alone.

At home in IL we have two trees, a live one and a fake one which was given to us as a gift by a family friend who works for a company that makes fake trees. When I was younger I was always worried Niņo would pee on it but he never has even done more than just sniff the tree casually when it went up. Chester hid all last December so we don't know what he'll do with it this year.