In many shelters in the U.S., there is a cruel method of "euthanasia" involving placing animals in a gas chamber without sedation where they suffocate to death. Animals are piled into the chambers, they put live dogs on top of dead ones and they all fight each other for the last breath of air. This process can take up to 30 minutes. Animals scream in fear & pain.  It is unacceptable that the law condones it. Only 20 states have banned this form of euthanasia. Lets stand together and ban the use of Animal Gas chambers in all 50 states.