"Some dogs eating "Optima Puppy Lamb and Rice Dry Dog Food" have been poisoned by aflatoxin - a naturally occurring toxic chemical that comes from a fungus found on corn and other grains.
It can cause severe liver damage.
"Three dogs have been confirmed dead, and they all ate the batch of Optima food," said the Shanghai Naughty Family Pet Co, a pet clinic on Hongqiao Road. These dogs were fussy about their food, had diarrhea and vomited, all symptoms of aflatoxin exposure, staff said. An imported feedstuff registration list posted by China's Ministry of Agriculture shows that the Optima dog food's production enterprise is Australia-based Doane International Pet Products.
But Tan said her purchase order said the food was made in the United States. "American-made Optima is a very famous brand. That's part of the reason I chose it," Tan added."
Optima is made by Doane Pet Care which is owned by Mars. http://www.shanghaidaily.com/sp/article/2009/200901/20090112/article_387776.htm