Even with their calm nature, you want to make sure you take the time for obedience training for your Dandie. Because each dog is different, you want to make certain that you train your dog to suit your lifestyle. Since they can sometimes be wary of strangers, you want to make sure you teach them how to react to strangers, especially if you tend to have a great many visitors.
It's important to begin obedience training as soon as your puppy comes home. By beginning early, you will be assured of more successful training in some of the critical areas such as coming when he is called, cessation of barking upon command, reduced time for potty training, and teaching your puppy the right Early obedience training will also allow you to teach your Dandie not to jump on people who come in the house and to not bark at those you have allowed to enter your home.
A Dandie Dinmont Terrier is a very affectionate dog and loyal to his family. As such, he responds best to positive commands and praise instead of negativity. Train him with the emphasis on rewarding good behavior rather than punishing bad behavior, and you will be more successful and make your puppy more likely to do what you expect. As with any kind of dog training of any breed, the key is in consistency. You must always work with your dog to make sure he understands the type of behavior that is acceptable. Do not under any conditions attempt to deviate from acceptable behavior for any reason or he will not understand what you expect of him,
Do not expect your puppy to learn potty training quickly. A puppy is no more than an infant, and it make take him several months to fully grasp the idea of doing his bathroom duties outside. Until he learns what you expect him to do, you may wish to confine him to an area of the house where he can do the least damage if he has an accident. Crate training is often good for this since most dogs will not go to the bathroom in the area where they sleep. The crate is also a good way to keep your puppy out of mischief when you are not home. He will eventually learn that if he doesn't make a mess on the floor or get into mischief when you are gone, he doesn't have to remain in his crate when no one is home.
You may also choose to send your puppy to obedience school where he will learn how to respond to your commands and abide by your rules. If you don't have the expertise to train your dog or to know the commands to use, this may be a good idea. Both you and your puppy will learn from the experience, and it will be easier for him to differentiate between acceptable and non-acceptable behavior. Some dogs respond better to a professional, so you will have to assess your own dog.