Chloe is our only kitty who has ever really been a tree climber. She has outgrown that phase, though, and thankfully, hasn't climbed in a few years now. The cats mostly like to sleep on the tree skirt, although they do like to steal bows and play in tissue paper in gift bags. We don't secure the tree to the wall--our tree is artificial and fairly sturdy, but we do hang all of the bell ornaments on the lowest branches so we know when a kitty is getting too nosy.