It can be frustrating when your dog keeps getting into the Christmas tree, but there are a few things you can try to prevent it. First, try putting up a barrier around the tree, such as a fence or gate, to keep your dog out. You could also try spraying the tree with a scent that your dog doesn't like, such as citrus. Additionally, you can keep your dog busy with other activities, such as playing with them or taking them for a walk, so that they're not tempted to get into the tree.