H.R. 615 This bill could save the life of your pet's and wildlife!
It's purpose is to amend the Federal Hazardous Substances Act to require engine coolant and antifreeze to contain a bittering agent so as to render it unpalatable.
The main ingredient, ethylene glycol, is sweet tasting and is attractive to animals. It only takes a small amount (1-2 teaspoons for cats, 3 tablespoons for a med dog for example) to poison and kill anything that ingests it. Read more about Antifreeze poisoning and it's affects.