The Newfoundland dog is a large working dog. They can be either black, brown, or white-and-black (called Landseer). 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 Newfoundland's extremely large bones give it mass, while its large musculature gives it the power it needs to take on rough ocean waves and powerful tides. These dogs have huge lung capacity for swimming extremely long distances and a thick, oily, and waterproof double coat which protects them from the chill of icy waters.

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