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 ...

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 ...

The relationship a dog builds with their owners and how much money their owner makes can make them live longer, research out of Arizona State University says. Researchers have been running a study ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Is your dog a small ...