The data base here is up to 2,400 dead pets now.
http://www.petconnection.com/
This claim needs to be taken with a huge grain of salt. This is a pet-owner reported list of affected animals, and many pet owners are absolutely clueless about the fact that kidney failure is extremely common in both cats and dogs. Pretty much all cats will get it if they don't die of something else first. And there are many common products and plants that are commonly found in homes, which can produce sudden, acute kidney failure in cats and dogs. I participate in an online group for owners of cats with kidney failure, and there have been many new members every single week for many years. Most just recently learned their cat was in kidney failure, when actually the condition had been well underway for years and just finally produced acute symptoms.
With all the publicity about the contaminated food, tens of thousands of people are now rushing off to the vet at the slightest sign of Fluffy or Fido being a little under the weather, or even without any signs but because the animal ate one of the affected brands (though the owners usually didn't have the containers still around and had no way of knowing whether the food had actually been from one of the recalled batches). Even if none of the pets had ever consumed any of the contaminated food, with this huge surge in the number of pets being brought into vets, there was invariably going to be a huge surge in the numbers of pets diagnosed with kidney failure. Many owners imagine that kidney failure is an unusual event in a pet's life, and are claiming their pet's new diagnosis or sudden death is due to the contaminated food, when there's really no evidence to support the claim. I'd put a lot more stock in the numbers being reported by the Veterinary information Network, which currently stand at a total of 471 cases, 104 of which have died, 59 of which have survived and are no longer requiring veterinary care, and 308 still undergoing treatment. With vets reporting 104 deaths and this owner-reported database claiming 2400 deaths, obviously somebody's not counting right, and it's more likely the pet owners than the vets.