I have had 3, no 4 great dogs in my life... Scarlet, my Red Irish, lived to be 13 years old. She was in perfect health up until the 12th year, when she quite naturally started downhill. She ate purina puppy chow all her life, because that's what she liked. Then there was Bo-dog, my 12 pound mutt, who lived to be 22, that's right, 22 years old. He was in perfect health, except for a malignant tumor on his gum that had to be removed when he was 12 years old. He went downhill fast his 21st year. He also ate purina puppy chow all his life, augmented with pedigree canned, and his favorite, chicken. Jake disappeared last June, but he and Shylo, my current dog, both ate Beneful, supplemented with pedigree canned. I could never bring myself to pay those prices for dog food. Bottom line: All my dogs survived quite nicely on plain ole dog food...