many people keep a dog or cat or some other kinds of pet in their home. Although there is some expense involved in terms of good food and medical treatment, there are still many benefits to keeping a pet Firstly, pets are good companions. This is especially important for people who live alone and do not got out too much. Somes pets can also help to protect the house from burglars. Secondly, dogs and cats like to play can give hours of fun to children. Finally,in fact ,the actual expense of feeding pets is not too much high Some people claim that keeping pets is not hyglenic. I do not think this is necessarily true. Responsible pet owners keep their pets clean and healthy so they do not smell bad To sum up, there are more benefits than drawbacks to keeping a pet, especially elderly people and children. In most cases, therefore, the cost is justified