This breed is a medium-sized, short-coated dog that occurs in two main colour forms. It has either brown or black hair distributed fairly evenly through a white coat, which gives the appearance of a 'red' or 'blue' dog. Both red dogs and blue dogs are born white (except for any solid-coloured body or face markings) and the red or black hairs show from around 4-weeks of age as they grow and mature. The distinctive adult colouration is the result of black or red hairs closely interspersed through a predominantly white coat. There will often be a solid colour spot at the base of the tail and a white tip. The tail should be set moderately low, following the slope of the back. It should hang in a slight curve at rest, though an excited dog may carry its tail higher. It responds well to familiar dogs, but when multiple dogs are present, establishing a pecking order can trigger aggression. It is not a breed that lives in a pack with other dogs.