Everyone knows the old adage about dogs being man's best friend, but you may not know that dogs might also be one of man's best hopes to treat age-related illnesses. That's because our canines develop ...

Editor’s note: This Q&A has been lightly edited. There are many factors that influence a dog’s lifespan. A dog’s breed and size play a significant role. Smaller dogs (like Yorkies) tend to live longer ...

We asked scientists from the Dog Aging Project for practical tips to improve your dog’s lifespan—from what to feed them to exactly how often they need a walk. Dog owners take their pets for a swim at ...