What to avoid? Anything you wouldn't eat your pet should avoid, too. While a little bit of meat -- beef or poultry -- won't hurt and would be appreciated, steer clear of the fatty parts and the poultry skin, which also harbors fat.

While cooked poultry bones are out, some raw or cooked beef bones can be safely substituted. Knuckle bones (for large dogs) and oxtails (for small ones) stand up to vigorous gnawing, providing your pet with plenty of yummy, messy fun. Supervise your dog's chewing, and throw bones out after a few hours of attention or if they get broken into pieces that can be swallowed.

Ornaments, too, are deadly in the mouths -- and stomachs -- of pets, and even the water at the base of the tree contains secretions that can at the very least cause a stomachache. Light strings are no good for chewing, and the whole tree can come down on the cat climbing in its branches. Some dogs may even be inclined to break the rules of house-training on a freshly cut tree -- why else, they reason, would anyone bring a tree into the house?

The best way to keep your pets out of tree trouble is by making the tree off-limits unless you're there to supervise. Putting the tree in a room with a door you can close is probably the easiest solution.

And before you share your holiday candy with your pet, be aware that chocolate is toxic to dogs and may be deadly to the little dog who gets a good-sized piece.