The breed is a light to moderate shedder. Colors, while historically predominantly white with patches of red, black, or brindle, have grown in recent years to include many color patterns including black, red, brown, fawn, and all shades of brindle. The color conformation is quite varied, but solid black or any degree of merle is considered a cosmetic fault, and a blue color is a disqualification by the National Kennel Club Breed Standard. Black pigmentation on the nose and eye rims is traditionally preferred, with only some pink allowed. They mature later than many other breeds, not until the age of two, and as puppies they will be curious yet aloof with strangers, but confident at maturity.Socialization of this breed is paramount: this breed should never be left alone, bored, in a house or garage day after day, as it may become chronically fearful and aggressive towards things it does not know or understand.
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