A dog is a natural explorer, and a Christmas tree is a tempting target. To keep your pup away, try using a baby gate to create a barrier around the tree, or place a few dog-safe deterrents around the base of the tree. You can also try using a training clicker and treats to teach your dog that approaching the tree is off-limits. Finally, make sure to give your dog plenty of alternative activities and toys to keep them entertained during the holiday season.