A great question! Cats are naturally curious and playful, so they may see a Christmas tree as an exciting new toy to climb and explore. To keep your furry friends from getting into trouble, you can try a few different strategies. First, make sure your tree is securely anchored to the wall or floor so that it can't easily be knocked over. You can also try putting some cat repellent spray on the base of the tree, which should discourage them from getting too close. Additionally, providing plenty of toys and scratching posts will help keep your cat occupied and entertained away from the tree.