Retrievers are a type of dog known for their friendly nature and intelligence. They were originally bred to help hunters retrieve game, such as birds, from land and water. Popular breeds include the Labrador Retriever, Golden Retriever, and Chesapeake Bay Retriever. These dogs are often used in various roles, including service and therapy work, due to their gentle temperament. Retrievers are characterized by their strong sense of smell and excellent swimming abilities. They have a thick, water-resistant coat that helps them in cold environments. Their playful and loyal disposition makes them great family pets, and they thrive on human interaction and exercise.