Yellowstone Bear World
A drive through nature park where you can see wildlife include several bears. Fun gift shop, petting zoo, and kiddie rides included.
If you don't have the chance to see Yellowstone, this is a great close option. You can see buffalo, elk, big horn sheep, bears, wolves, moose and deer in a natural setting. There is a petting zoo and carnival rides for small children all included in the price of admission. You can feed the fish.
Great place to stop along the way up or back from the area. It is a drive thru North American animal safari type park.