Wondering what dogs dream about? Learn what science reveals about canine dreams and what your dog might experience while sleeping.

Find out why your dog wags its tail while sleeping, what it means, and if it’s normal. Learn about this sleep behavior and what to watch for.

An owner who found her dog fast asleep quickly became worried as his dreamy whimpers seemed to change and suggested a nightmare. Duncan the Australian shepherd is seen fast asleep under his owner's ...