Is your family interested in buying a dog? A dog can be a1companion(伙伴) to your family, but if you choose the wrong kind of dog,you will have a lot of2. Families should sit down and thoroughly discuss the possible problems before3a dog. Even if the children in your family are the ones who want the dog, the parents are the ones who are really responsible for seeing that the animal is properly4. If you don't know much about dogs, it is a good idea to go to the5for books about different kinds of dogs, as well as books about how to train a young dog. In reading about the6breeds(种类)you should know that a dog described(描述)as very alert(机敏灵活的)may be too active. When a book describes a dog as an excellent hunting dog, it probably means that the dog won't be happy living in a7house. Dog breeds vary(变化)in popularity as the years go by. One of the most popular dogs these days is the German shepherd(牧羊犬). This is because it8protection as well as companionship(陪伴). The family should be warned that these dogs grow up to be very big, and may be too9for children to control. If space is limited, a toy dog may be a good choice. These dogs are very small and10to train. They don't need to be walked daily, since they can exercise in the home.