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Dog Science

'Ava' is a Labrador Retriever Pit Bull mix and has been at the Humane Society of Central Arkansas since August of last year, making her the dog that's been there longest. Shelter manager Carolyn Carter said the sweet tempered dog does not show well when she's in her kennel because she always looks sad.Xmas Pets

New study: Signs show that dogs can mourn their canine buddies

Swiss Alps robot hiking dogs could cross different planets

Dogs as lie detectors: They can tell when we fib to them

Dog bone fossil found in Alaska

sourdough bread (Photo by Sean Gallup/Getty Images)

Can dogs eat sourdough bread safely?

Giving Tuesday (Photo by Kelly Barnes/Getty Images)

Can dogs see ghosts?

facial recognition (Photo Agency-Animal-Picture/Getty Images)

Human facial recognition not that exciting to dogs