Keep your pets away from stream or pond edges so they don’t fall through the ice.
Ensure your vehicles are not leaking antifreeze as even a small amount (as little as one tablespoon) ingested by a dog or cat can be deadly.
Honk your horn prior to starting your car to alert any stray cat that may be seeking warmth under the hood.
Don’t tie a pet outdoors during periods of extreme cold. Even a few minutes in the cold without protection from wind and wet can cause hypothermia.