Thunderstorm over the prairie in Montana (© Artbeats)

Mt. Clements and Mt. Oberlin viewed from the Highline Trail with bear grass in bloom, Glacier National Park, Montana, U.S.A. (© Shannon Nace/Lonely Planet Images)

Young black-tailed prairie dogs (Cynomys ludovicianus), Montana -- Beth Davidow/Visuals Unlimited, Inc. ©

Mountain goat overlooking Hidden Lake and Bearhat Mountain, Glacier National Park, Montana -- Roberta Olenick/Corbis ©

Bobcat running through the snow in Montana, USA -- imagebroker RF/Photolibrary ©