This undated photo released by Suzi Hanna shows Jack Hanna hiking at Grinnell Glacier at Glacier National Park in Montana. TV host and zookeeper Jack Hanna says he took his own advice and used pepper spray on grizzlies headed toward him. The Columbus Zoo keeper and frequent David Letterman guest says he was with his wife and other hikers in Montana's Glacier National Park on Saturday, July 24, 2010, when they saw a mother bear and two large cubs coming toward them. Hanna and the others moved slowly back up the trail to a clearing and stood still while the mother and one cub passed by.
