They were originally bred and used as working dogs for fishermen in Newfoundland. Newfoundland dogs are known for their giant size, intelligence, tremendous strength, calm dispositions, and loyalty. They excel at water rescue/lifesaving because of their muscular build, thick double coat, webbed feet, and swimming abilities. The American Kennel Club (AKC) standard colours of the Newfoundland dogs are black, brown, grey, and white-and-black (sometimes referred to as Landseer). Other colours are possible but are not considered rare or more valuable. The Kennel Club (KC) permits only black, brown, and white/black; the Canadian Kennel Club (CKC) permits only black and white/black. The 'Landseer' pattern is named after the artist, Sir Edwin Henry Landseer, who featured them in many of his paintings.