WASHINGTON - A major manufacturer of dog and cat food sold under Wal-Mart, Safeway, Kroger and other store brands recalled 60 million containers of wet pet food Friday after reports of kidney failure and deaths. An unknown number of cats and dogs suffered kidney failure and about 10 died after eating the affected pet food, Menu Foods said in announcing the North American recall. Product testing has not revealed a link explaining the reported cases of illness and death, the company said."At this juncture, we're not 100 percent sure what's happened," said Paul Henderson, the company's president and chief executive...