Labs descend from the St. John's water dogs of Newfoundland and were developed in Britain as gun dogs for retrieving. That history explains the dense, water-resistant double coat, the thick otter tail and the webbed feet. They come in black, yellow and chocolate, and field-bred dogs tend to be leaner and more driven than show-bred ones.
Most Labs are friendly, eager to please and motivated by food, which makes training easier and weight management harder. In Allentown, expect fur on the couch year-round, a heavy shed as the seasons change, and a wet-dog smell after rainy walks on the parkway trails. Adolescence can last until two or three years old, so a young Lab may be bouncy and mouthy for a while, while an adult or senior is often calmer.