Holiday plants, such as mistletoe and holly, have been known to cause severe stomach upset to dogs and lilies of any sort are almost certainly deadly to cats. Artificial decorations pose their own threats. Glass ornaments can cut, electric cords can burn if chewed upon, and the traditional strands of tinsel often end up causing an obstruction in the belly of a cat.
Outside, the situation might actually worsen. A very common poisoning during the winter months is car antifreeze. Antifreeze has a very sweet taste and most dogs and cats will readily consume it. If you suspect your pet of drinking antifreeze, you must act immediately and contact your veterinarian or local animal emergency hospital.
The colder temperatures can be rough on older pets, especially those with arthritis. Bring outdoor pets inside.
Pets and people can enjoy the beauty that winter has to offer, but it always pays to be prepared.