The adult Newfoundland has a flat, water-resistant, double coat that tends to fall back into place when rubbed against the nap. The outer coat is coarse, moderately long, and full, either straight or with a wave. The undercoat is soft and dense, although it is often less dense during the summer months or in warmer climates. Hair on the face and muzzle is short and fine. The backs of the legs are feathered all the way down. The tail is covered with long dense hair.
Excess hair may be trimmed for neatness. Whiskers need not be trimmed.
The Newfoundland’s dense, moderately long coat should conduce to its original purpose of protecting the dog from the long, cold winters of his native island and the icy waters surrounding it. The coat is a "closed" rather than an "open" one. (An open coat is one that stands out like a Chow’s.) A kinky, curly, silky, or woolly coat is undesirable.