The wolves were kicked out of Yellowstone for eating to many elk but after 70-years they wore brot back know there are some pros and cons. The wolves can sometimes attack visitors but they can help the elk population stay down, they sometimes go out onto the roads and can get hit by cars but if they get mad we can tame them with food, they can steal food from the visitors but they have taken  down some of the kieodes  in the ariea.