They may grow up to 56–76 cm (22–30 in) tall at the shoulder.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. It is a taller, more narrow white dog with black markings not bred with a Newfoundland. A Newfoundland's good, sweet nature is so important, it is listed in the Breed Standards of many countries; dogs exhibiting poor temperament or aggression are disqualified from showing and should never be used to breed. The breed standard in the United States reads that 'Sweetness of temperament is the hallmark of the Newfoundland; this is the most important single characteristic of the breed.' === Health === There are several health problems associated with Newfoundlands. === Health === There are several health problems associated with Newfoundlands.
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