Healthy aging starts with providing proper nutrition throughout a dog’s life, but it is never too late to begin feeding a healthy diet to help increase your old dog's time with you. Here are some tips on feeding senior dogs from the AKC Canine Health Foundation: Get out the measuring cups: One of the keys to longevity is preventing obesity. Overweight dogs, the Canine Health Foundation reports, are more prone to diseases like osteoarthritis, diabetes mellitus, respiratory and