|  Come here! Look at the friends of people! What do you know about dogs? Many people like to keep(饲养)a dog. In the city, people keep a dog not only(不仅)for pleasure(快乐)but also(而且)for safety(安全). A dog can be a good guard(警卫员). In the country(乡村), farmers like to keep dogs for pleasure, too. Besides(此外), some of the dogs can help farmers to look after(照看)animals, such as(例如)sheep and pigs. Dogs can also be a great help to the police. Dogs often do important(重要的)work for them. So dogs are really our good friends, and we should take good care of them. | 
