Food that is left unattended is one of the main reasons that you might see a bear. The park rangers have done a very good job, however, of educating the public about not feeding the bears, as was the custom many years ago. In addition, strict guidelines are enforced concerning food in campgrounds and around the park, in order to discourage bears from interacting with humans. Because of this, it will be quite unusual for you to see a bear. Of course, if you do, please follow the guidelines from the park about how to stay safe when encountering bears, as well as any wildlife in the park.