Grizzly bears in captivity frequently disply abnormal behaviors, such as repetative pacing, swaying from side-to-side, and biting the bars of their enclosure. In order to improve animal welfare, zoos and parks need to stimulate their captive bears to behave as closely as possible to their wild counterparts. Bear sanctuaries are an ideal place where grizzly bears can live out their lives in an enriched and safe environment that is as close their natural habitat as possible.