Big, powerful, and built for hard work, the Bernese Mountain Dog is also strikingly beautiful and blessed with a sweet, affectionate nature. Berners are generally placid but are always up for a romp with the owner, whom they live to please. The Bernese Mountain Dog is a large, sturdy worker who can stand over 27 inches at the shoulder. The thick, silky, and moderately long coat is tricolored: jet black, clear white, and rust. The distinctive markings on the coat and face are breed hallmarks and, combined with the intelligent gleam in the dark eyes, add to the Berner's aura of majestic nobility. A hardy dog who thrives in cold weather, the Berner's brain and brawn helped him multitask on the farms and pastures of Switzerland. Berners get along with the entire family and are particularly gentle with children, but they will often become more attached to one lucky human. Berners are imposing but not threatening, and they maintain an aloof dignity with strangers.

Like the other Sennenhund, the Bernese mountain dog is a large, heavy dog with a distinctive tri-colored coat, black with white chest and rust-colored markings above eyes, sides of the mouth, front of legs, and out around the white chest. However, it is the only breed of Sennenhund dogs with a long coat.^[4] The ideal of a perfectly marked individual gives the impression of a white horseshoe shape around the nose, which is always black.^[5] There is a white “Swiss cross” on the chest when viewed from the front. A “Swiss kiss” is a white mark located typically behind the neck, but may be a part of the neck. A full ring would not meet the type standard. The AKC breed standard lists, as disqualifications, blue eye color, and any ground color other than black.