Fall brings a deadly risk to pets as many drivers prepare their cars for cooler temperatures by changing the engine's coolant.
Standard antifreeze is deadly to humans and animals.
A substance in the antifreeze causes kidney failure when the body converts it to a crystal that stops kidney function. Dr. Cory Langston, service chief for Community Practice at Mississippi State University's College of Veterinary Medicine, said as little as a teaspoon of antifreeze can kill a dog or cat. If you see an animal drink antifreeze, don't wait to see if it gets sick. By the time you notice the animal is sick, it's often way too late to save it. The ideal treatment window is within the first four hours.