Mammoths and Mastodons: Titans of the Ice Age is a big, big hit
And a display where you can feel what mammoth hair might have felt like.
And little people figurines in tents made out of mammoth bones that you can play with. (Yes, people hunted mammoths!)
You can see how the pygmy and full-size versions compare while viewing bone displays like this one.
And there are other animals included in the exhibit, too. It tells a whole ecological story.