breeds descends from more than one region. Description Coat A Siberian Husky has a double coat that is thicker than that of most other dog breeds. It has two layers: a dense, finely wavy undercoat and a longer topcoat of thicker, straight guard hairs. It protects the dogs effectively against harsh Arctic winters, and also reflects heat in the summer. It is able to withstand temperatures as low as . The undercoat is often absent during shedding. Their thick coats require weekly grooming. An excessively long coat, sometimes referred to as a "wooly" or "woolie" coat, is considered a fault by the breed's standard as it lacks the thicker protection of the standard coat's guard hairs, obscures the dog's clear-cut outline, causes quicker overheating during serious harness work, and becomes easily matted and encrusted with snow and ice. Siberian Huskies come in a variety of colors and patterns, often with white paws and legs, facial markings, and tail tip. Example coat colors are black and white, copper-red and white, grey and white, pure white, and the rare "agouti" coat, though many individuals have blondish or piebald spotting. Some other individuals also have the "saddle back" pattern, in which black-tipped guard hairs are restricted to the saddle area while the head, haunches and shoulders are either light red or white. Striking masks, spectacles, and other facial markings occur in wide variety. All coat colors from black to pure white are allowed. Merle coat patterns are not permitted by the American Kennel Club (AKC) and The Kennel Club (KC). This pattern is often associated with health issues and impure breeding. Eyes The American Kennel Club describes the Siberian Husky's eyes as "an almond shape, moderately spaced and set slightly obliquely." The AKC breed standard is that eyes may be brown, blue or black; one of each or particoloured are acceptable (complete is heterochromia). These eye-color combinations are considered acceptable by the American Kennel Club. The parti-color does not affect the vision of the dog. Nose Show-quality dogs are preferred to have neither pointed nor square noses. The nose is black in gray dogs, tan in black dogs, liver in copper-colored dogs, and may be light tan in white dogs. In some instances, Siberian Huskies can exhibit what is called "snow nose" or "winter nose." This condition is called hypopigmentation in animals. "Snow nose" is acceptable in the show ring. Tail Siberian Husky