Just like so many pet parents, Susan learned the 'truth' about pet food the hard way. Suddenly at 8 years old, Sam - Susan's beloved dog, showed a tumor on her pelvic bone. The veterinarian gave Susan the worst news; bone cancer. She had two weeks to tell Sam good-bye. And then things got worse. Her veterinarian told Susan her dog's cancer was probably the result of chemical preservatives in her pet food; chemicals used to extend the shelf life of the dog food. A phone call to the pet food manufacturer (the leading dog food in the U.S. at the time) changed Susan's life. When asked what the 'sh...