Remember your little brass dinner bells ... so that predators that eat meat like bears, wolves, and lions can find you easier.
http://www.parkcountysheriff.net/news_33_978950629.pdf
I am very familiar with the USGS Interagency Grizzly Bear Study Team (IGBST) in Bozeman, Montana, having been there to study their animals and methods. They capture grizzlies and use tem as show. They put the grizzlies in captivity and treat them as zoo animals. Consequently the grizzlies try to escape back to their natural habitat, which is the local environment, and become defensive and aggressive.