Most people have had a dog or wanted one as their companion at some time in their lives. If you are thinking of buying a dog, however, you should first decide what sort (种类、类型) of companion you need and whether the dog is likely to be happy in the surroundings(环境) you can provide. Specialists' advice is available to help you choose the most suitable (合适的) breedof dog. But in part, the decision depends on common sense. Most breeds were originally developed to perform specific tasks. Therefore, if you want a dog to protect you or your house, for example, you should choose one that has the right size and characteristics (特征/色/点). You must also be ready to devote a lot of time to training the dog when it is young and giving it the exercise it needs throughout its life. Dogs are demanding pets, while cats are connected with the house and so they are satisfied if their place is safe. A dog is connected with its master and wants him to show proof of his affection (感情).

The best time to buy a baby dog is when it is between 6 and 8 weeks old so that it can transfer(转移) its affection from its mother to its master. If baby dogs have not established (建立) a relationship (关系)with the human being until they are over eight months old, their strong relationship will always be with dogs. They are likely to be too shy when they are brought out into the world to become good pets.