6/6 Shows how some of today's animals are adapted from their Ice Age cousins.
5/6 Mammoths, cheetahs, wolves, bison, short-faced bears and lions once roamed the prairies.
4/6 The mastodon and scimitar-toothed cat were among the animals living on the ice's edge.
3/6 Florida used to be home to giant ground sloths, glyptodonts, sabre-tooths and skunks.
2/6 Mammoths, sabre-toothed cats and camels inhabit the area around the Grand Canyon.
1/6 The spectacular wildlife of North America as its first people would have seen it.