Peoria County, Illinois -- Household pets should be brought inside when the temperature drops below 10 degrees.
If your dog must be outside, the law requires it to have a proper shelter and plenty of water.
And watch out for frostbite, especially on paws, ears, tails and noses.
The Peoria County Animal Protection Services says cats really struggle in cold weather and should never be left outside.
"Even though they can survive these temperatures, they're really uncomfortable, and I would even suggest they are suffering if left outdoors in sub-zero temperatures. And some animals won't survive," said Lauren Malmberg with the Peoria County Animal Protection Services.
If you keep pets in a garage, double check for antifreeze spills.
Animals are attracted to its sweet smell, and it is almost always fatal.