dog's head. The Dandie Dinmont Terrier has a similar body shape to the Skye Terrier, but the Skye's coat is thicker and longer. The coat comes in two colour ranges, pepper and mustard. Pepper ranges from dark blueish black to very light silvery gray; mustard can vary from reddish brown to fawn, with the head appearing to be almost white. Typically, the legs and feet are of a darker colour with the lighter colour on the body slowly blending into that on the legs. The depth of the coat can reach up to . The colour of the coat is usually set by the time the dog reaches eight months of age, but the Dandie Dinmont Terrier will continue to mature physically until around two years old. Temperament The breed is tough but usually friendly and is suitable for older children. It makes both a good companion and a guard dog but is among the most docile of the terrier breeds; they are usually quite undemanding of their owners. However they are known for their ability to dig large holes in a short space of time. They can be trained to be good with cats but should not be trusted around smaller animals such as hamsters or rats. They are described as being "very game", in that they are prone to challenging other animals, including foxes, and in some cases other dogs. Health Due to the breed's elongated body, there can be back problems within the breed, specifically with intervertebral discs in the dog's back. These discs can sometimes slip out of place, resulting in spinal disc herniation. Symptoms depend on what part of the dog's back is affected; they can include weakness, paralysis, and/or loss of bladder control. They are described as at higher risk for extra-hepatic congenital porto-systemic shunts. As a concerted effort has been made to breed out genetic abnormalities, there are no especially common conditions affecting the Dandie Dinmont Terrier. However, minor problems affecting the breed can include hypothyroidism, primary closed angle glaucoma and Cushing's syndrome. In order to combat glaucoma in the breed, the breed clubs recommend that Dandies should have a procedure called a gonioscopy performed on them at regular intervals throughout their lives. The Dandie is also at slightly higher risk of canine cancer than average. The average life expectancy of a Dandie Dinmont Terrier is 11–13 years. References Specific General FCI breeds