Weird story, but I think someone made it up. Assuming the animal did live through the injection... it would have died in the freezer. I don't think that a rat could survive in -18C/0F long term... a rats body temperature is +37C.2manyrats said:I heard a story about a researcher who gave a rat a lethal injection of phenobarbitol and then placed it in a laboratory freezer that was filled with the bodies of many other animals. A few weeks later he heard rattling sounds coming from the freezer, when he opened it up, he found the rat, alive. Apparently it had not only survived the lethal injection, but had survived freezing by eating the other animal's bodies. And there went all this guy's research down the drain.