No vacation to the Yellowstone National Park or Grand Teton National Park region is complete without an adventure into the wild at Yellowstone Bear World, a drive-thru wildlife park. During your visit you will be surrounded by the free-roaming wildlife of North America as you drive your personal vehicle through the park. Wildlife you will see includes Rocky Mountain Elk, Bison, White-tail Deer, Mule Deer, Rocky Mountain Goats, Moose and of course American Black Bear, Grizzly Bear and Gray Wolves.