 By the end of March, veterinary organizations reported more than 100 pet deaths among nearly 500 cases of kidney failure, with one online database self-reporting as many as 3,600 deaths as of 11 April.The U.S. Food and Drug Administration has received reports of several thousand cats and dogs who have died after eating contaminated food, but have only confirmed 14 cases, in part because there is no centralized government database of animal sickness or death in the United States, as there are with humans (such as the Centers for Disease Control and Prevention).As a result, many sources speculate the actual number of affected pets may never be known, and experts are concerned that the actual death toll could potentially reach into the thousands.