Rat poison was found on the imported wheat in the recalled pet foods and is the likely culprit of reported animal deaths & illnesses, according to the Department of Agriculture and the EPA. ABC News reports:

A source close to the investigation tells ABC News that the rodenticide, which the source says is illegal to use in the United States, was on wheat that was imported from China and used by Menu Foods in nearly 100 brands of dog and cat food. more ›