Bear-Proof Product Testing
At the Grizzly & Wolf Discovery Center in West Yellowstone, Mont., visitors can see wolves, birds and bears up close, but the grizzlies they get to see also provide a service: They test bear-resistant products.
"The protocol is 60 minutes of contact time [with a product]," says Randy Gravett, the facilities manager at the center. "So the bear has to work on that container for a total of 60 minutes, and if they do not get in it, then it passes the test."
http://www.npr.org/2011/08/25/139792974/grizzlies-test-products-to-keep-out-the-average-bear