AP - A recall of potentially deadly pet food has dog and cat owners studying their animals for even the slightest hint of illness and swamping veterinarians nationwide with calls about symptoms both real and imagined. "It's like we're on pins and needles," said Brian Paone, a 27-year-old loan auditor in Knoxville, Tenn., who scheduled a blood test with his vet after realizing both of his cats had eaten brands on the recall list.More...