A black Lab is a Labrador Retriever in the breed's original color, not a separate breed. Labs trace back to the St. John's water dogs of Newfoundland and were refined in Britain as gun dogs, which explains the water-resistant double coat, the otter tail and the love of retrieving. Adults weigh 55 to 80 pounds, and many have a small white chest spot.
That retrieving drive shows up in Concord as games of fetch in the yard and steady pulls on the leash. Labs are food-motivated and eager to please, so training usually goes well, but they stay bouncy through a slow adolescence and shed heavily when the seasons change. Dogs vary: field-bred Labs are often leaner and more driven than show-bred ones, and a senior can be far calmer than a two-year-old.