With the small size of the Dandie (11-18 inches), and the fact that it sheds very little in spite of its rough and somewhat long coat, it makes a great dog for any type of home environment. They are quite ideal for apartments since they don't need much space indoors and must be walked on a leash anyway because of their tendency to run away and chase things due to their nature as hunters.
They will bark at strangers but do not resort to aggression. The Dandie will not instigate a fight, but he also will not back down if he or his family is threatened. He will defend his own and the possessions of his owners with his very life. He is patient with children, though some dogs of the breed do not get along well with young children. They are also very good with other animals including cats as long as they are brought up with them. On the downside, they may see rodents as something to hunt, so they may not accept hamsters, gerbils, and ferrets as family pets, so you should exercise caution.
The Dandie loves his family and craves attention. He is also fiercely loyal and protective of his family and their possessions. In spite of his small size, he will strive to protect those he loves, and has a deep bark that will alert the family to any sign of danger. He also makes a very good doorbell, announcing visitors as they arrive. They love to play and need a moderate amount of exercise not only to prevent them from digging but also to make sure they don't become overweight and develop back problems as this breed has a tendency to do.
For a family with small children, the Dandie may not be the ideal dog. Of course, if you get him as a puppy, they may become used to the children and not be overly concerned with their presence. For couples and those with older children, they can certainly find the Dandie to be a great dog. The only drawback with this breed is the expense. It is not the kind of dog a young, middle-class family can afford, but is more likely in the price range for those in the upper middle-class to upper class income range. The cost factor is due to their rarity, and breeders often have waiting lists for Dandie Dinmont Terrier puppies. If you feel this is the idea dog for your family, and you can afford the cost, you want to begin looking for a reputable breeder who can contact you as soon as one is available.
You can choose to use your Dandie as a working dog, household pet, or show dog. However you choose to use him, remember that he requires a great deal of affection and will give plenty in return. Train him with a positive rewards system rather than negative action, and you will experience a great deal more success while you are training your dog and during his lifetime.