Poison in Pet Food Identified

A toxic substance called Aminopterin, which is used used kill rats in some countries outside (though not in the U.S.) , is the suspected cause of renal failure and subsequent death in more than a dozen pets across the country. Aminopterin is also used as a cancer drug, but any amount in pet food is "too much", according to scientists at the New York State Animal Health Diagnostic Center at Cornell. A link to a list of pet food brand names and toll free information numbers can be found here.