The giant Canadian breed famous for water rescue and named for its island homeland is the Newfoundland.
Newfoundlands were developed as working dogs for fishermen on Newfoundland. They hauled fishnets, carried equipment, and worked in cold water. Their great strength, webbed feet, thick coat, swimming ability, and calm temperament made them especially valuable around boats and shipwrecks.
Historical accounts describe remarkable rescues. In 1828, a Newfoundland named Hairyman reportedly helped members of the Harvey family save more than 160 Irish immigrants after the wreck of the brig Despatch. In another famous case, a dog believed to be a Newfoundland helped bring a rope ashore after the SS Ethie wreck, allowing everyone aboard to reach safety.
The breed is sometimes confused with the Landseer, which refers to a black-and-white Newfoundland type in some contexts and is treated as a separate breed by certain kennel organizations. Newfoundlands also influenced other working breeds, including the Leonberger, and remain associated with organized water-rescue demonstrations.