Labrador Retrievers trace back to the St. John's water dogs of Newfoundland, which British sportsmen refined into steady gun dogs for retrieving game from land and water. The dense, water-resistant double coat, thick otter tail and webbed feet all come from that job. Labs come in black, yellow and chocolate, and field-bred dogs tend to be leaner and more driven than show-bred ones.
Many Labs are sociable and eager to please, and they love anything involving people, balls or water. That enthusiasm calls for daily exercise, consistent training and careful portion control, since many are strongly food-driven. Expect a bouncy adolescence that can last until two or three years old, and heavy seasonal shedding. Every Lab is different, so a dog's age and energy level tell you more than the breed label.