The Dandie Dinmont Terrier is a unique terrier dog with a body that is longer than it is tall. This small breed stands 20 to 28 centimetres at the withers and weighs 18 to 24 pounds. It has a large and strong head sporting a broad skull that narrows down towards the eyes. It has a well-domed forehead covered in silky hair. Its head wears a beautiful "poof" of silky topknot hairs and ear feathering. Its eyes are rich dark hazel, full and round that shows its soft and wise expression. Ears are droopy and are set well back on a Dandie Dinmont's head.
Dandies boast of a double coat comprised of a soft, downy and linty undercoat and a crisp topcoat that is about 2 inches long. The coat comes in two distinctive colours: mustard and pepper. The mustard coloured Dandie Dinmont is reddish brown to pale fawn with a creamy white silky topknot. The pepper coloured Dandie Dinmont is dark bluish black to a light silvery grey with a silvery topknot hair. For Dandie puppies, daily combing is required to avoid matting while older Dandies will have to be hand stripped at least twice a year with a professional groomer. Don't forget to trim hairs on top of their muzzles, the corners of the eyes, ears, legs, underbody, and between the footpads. The rest is basic grooming such as dental, ear and nail care.