Cold weather hazards are many and varied.
Exposure to winter's dry, cold air and chilly rain, sleet and snow can cause chapped paws and itcy, flaky skin. These are not serious, but can cause your pet some discomfort.
Take shorter walks when the temps are very cold. Toweling your pet off and cleaning his feet (pay special attention to the pads and between the toes) after every trip outside will help keep any ice balls or ice melt from irritating him.
Try not to bathe your pet often in the colder months. Between the dry winter air and stripping the oils from the skin with frequent bathing, your pet can become itchier and smellier.
Watch out for antifreeze spills!! Antifreeze is both sweet smelling and tasting to all pets. It is a lethal poison to your pet and unless treated immediately, it will cause your pet's death.
Pets need extra energy to keep warm in the cold weather. If they spend lots of time outside, increase the amount of food you feed them, and provide fresh water daily. Check two or three times daily if the temperatures are below freezing.
Make sure your pet has a draft-free palce to sleep with extra bedding. Up off of the ground or floor helps also. If you have pets that will not come in (big, wooly dogs or the neighborhood stray cats) thaere are several options to keep them comfortable and dry and warm.
Look for antifreeze with propylene glycol as the main ingredient, NOT ethylene glycol.
Ouside cat shelters do not need to be fancy! There are several good websites available to get information on providing cats dry, warm beds.
Consider coats and boots for those pets with very short hair and delicate skin!
Before you start your car in the cold, wet months, bang on the hood. Cats like to get up up in the front wheel wells under the warm engine and will also crawl up into the engine compartment itself to keep warm and dry. These potentially deadly accidents can be avoided with a quick thump on the hood as you walk by.