Dogs

Archaeologists have identified what may be the world's oldest images of dogs. The 8,000-year-old hunting scenes even feature some dogs on leashes.

Good news for dog owners: Man's best friend may help lower a person's risk of heart disease, a new study from Sweden finds.

If you're ever deciding between throwing a red ball or a green ball for your dog to fetch, know this: It doesn't matter to Fido because dogs are red-green colorblind, a new small study suggests.

The humorous new book "Science Comics: Dogs" entertainingly explains why today's canines look and behave very differently from their wolf ancestors.

Bursts of brain activity called "sleep spindles" work to consolidate memories in dogs as they snooze, just like in humans.

Your dog may be trying to tell you something. From an inquisitive head tilt to "puppy dog eyes," the expressions of our canine companions may be their attempts to communicate, a new study finds.

The CDC is investigating an outbreak of Campylobacter — a bacteria that causes diarrhea — linked with puppies sold at U.S. pet stores.

A novel theory holds that these endangered dogs use sneezes to vote on when their packs will move away from resting areas to begin hunting.

A woman in Arizona died from an infection called rabbit fever, despite never coming into contact with any rabbits, according to a recent report of the woman's case.

Dogs of a different color have been spotted roaming the streets of Navi Mumbai in India, according to news reports.