I have had only one kitten climb a Christmas tree. LOL That was 1977! I still recall walking in from school and hearing a "MEEEEEEEEEEEEEEEEEEEEEEEWWWWWWW!!!!" coming from the top third of the tree! LOL We had just gotten him a month before. Most of the cats I have had simply enjoy laying under the tree. Our recently lost cat, Bella, LOVED it! In fact, my Wife said this year, she can put down a tree skirt her late Mom made 40+ years ago. I have also had a cat or two that loved sleeping ON presents. Colonel had almost not interest in our tree. He would sometimes pop Bella for kicks, when she'd be crashed under the tree.