The Food and Drug Administration is asking dog and cat owners to report any problems their pets have had after eating jerky pet treats.
In a notice to consumers and veterinarians, the agency said it has linked illnesses from jerky treats to 3,600 dogs since 2007. About 580 of those pets have died.
The FDA says it has run more than 1,200 tests, visited pet treat manufacturing plants in China and worked with researchers but still hasn't determined the cause of the pet illness.
Pets can suffer from a decreased appetite, decreased activity, vomiting and diarrhea among other symptoms within hours of eating the jerky treats.