The Labrador Retriever, Labrador or just Lab, is a medium-large breed of retriever-gun dog. The Labrador is the most popular breed of dog in many nations. A favourite disability assistance breed in many countries, Labradors are frequently trained to aid those with blindness or autism, act as a therapy dog, or perform screening and detection work for law enforcement and other official agencies. The breed is best known for their obedience, loyalty, and playful composure. Additionally, they are prized as sporting and hunting dogs. Originally used in Newfoundland, as fishing dogs, they would help bring in the fishing nets and retrieve fish that had gotten away. Retrieved March 17, 2011.