The labrador is a retrieving gun dog of medium size, with a dense, weather-resistant coat, an “otter” tail, and a clean-cut head with a “kind” expression. The first labradors arrived in England from Newfoundland aboard fishing boats early in the 19th century, and imports to America began in the early 1900s. Labrador temperament is outgoing, indulgent with peers, human-oriented and tractable. Labradors can be found in guide and assistance dog programs, and substance detection and search and rescue work. Since 1992, the labrador retriever has headed the list as the most popular breed in the U.S.