The Canadian Golden Retriever has a thinner and darker coat and stands taller than other types. Golden Retrievers have mild feathering on the backs of their fore legs and heavier feathering on the fronts of their necks, backs of their thighs and the bottoms of their tails.The American Kennel Club (AKC) standard states the coat is a 'rich, lustrous golden of various shades', disallowing extremely light or extremely dark coats. This leaves the outer ranges of coat colour up to a judge's discretion when competing in conformation shows. Therefore, 'pure white' and 'red' are unacceptable, as is black.