Aside from keeping your pets in another room, there is no sure fire way to keep them away from Christmas trees. Be sure to keep your pets as safe as possible by following these tips:

Tuck lights and cords deep within the tree – make sure there are no electrical wires dangling from the branches. Tape down any cords running across the floor.
Use the bottom part of your tree for sturdy, shatterproof ornaments that won’t hurt your pet if they do pull them off.
Don’t use additives in your tree water. You don’t need them anyway, and your pets may drink the water.
Use fishing line to tie your tree to the wall so that it won’t topple over.
Make the tree inaccessible to pets when you’re not home to supervise. Close doors or use door gates to keep them away from danger. It’s up to you to intervene if your pet gets curious!
Keep these decorations away from pets:

Tinsel, Angel Hair, and Ribbon: These items can pose choking and strangling hazards for your pets.
Plants and Floral Arrangements: Poinsettias, hollies, and mistletoe can cause gastrointestinal upset and illness. Lilies can be deadly if eaten. Even so-called “nontoxic” plants can upset your pet’s tummy, and floral arrangements may be sprayed with preservatives.
Potpourri, Scented Oils, and Candles: can be harmful if ingested and dangerous if spilled.
Candy and Human Treats: Common ingredients such as chocolate, raisins, alcohol, and xylitol can be toxic to dogs and cats, not to mention the hazards of candy wrappers!
Invite Your Pet to the Party!

As the festivities kick into high gear, don’t forget to include your pet in the fun:

Dogs love to unwrap their very own gifts, and cats will play for hours in piles of tissue and gift paper.
Be sure to have plenty of pet toys on hand to encourage your pet to play appropriately.
Take your dog for long walks, to help dispel extra energy.
Reward your pet with healthy dog/cat treats rather than “people food.”
Also, make sure they have a bed nearby so that they have a place to calm down when they need to.
A little preparation on your part will ensure that your pet enjoys the party without crashing it!