There are two accepted coat colours, red and blue. Both colour forms can have a white 'star' on the forehead called the 'Bentley Mark', after a legendary dog owned by Tom Bentley. Common miscolours in the Australian Cattle Dog are black hairs in a red-coated dog, including the extreme of a black saddle on a red dog, and extensive tan on the face and body on a blue dog, called 'creeping tan'. The Australian Cattle Dog has a double coat—the short, straight outer guard hairs are protective in nature, keeping the elements from the dog's skin while the undercoat is short, fine and dense. Depending on whether one or both eyes have a patch, these are called, respectively, 'single' (or 'half') mask and 'double' (or 'full') mask. Dogs without a mask are called plain-faced. Any of these are acceptable according to the breed standard. In conformation shows, even markings are preferred over uneven markings.
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