00:0512 ice age giants roamed north america until climate shifts 12 extinct giants once crossed
00:12north america's ice age plains and forests from alaska tundra to florida wetlands huge mammals
00:17birds and reptiles hunted grazed and disappeared as climate shifted the colombian mammoth marched
00:23across open grasslands with curved tusks reaching 16 feet stripping plants with a trunk built for
00:29constant feeding the american mastodon pushed through ancient forests using shorter tusks
00:34and heavy jaws to browse branches leaves and swamp vegetation the saber-toothed cats stalked
00:40pleistocene plains driving long canine teeth into large prey after explosive ambushes from brush
00:46the dire wolf hunted across north america in packs chasing horses bison and camels before vanishing
00:51near the ice age's end the short-faced bear towered over ancient landscapes running on long legs while
00:56scavenging carcasses and intimidating other predators the giant ground sloth lumbered through
01:01forests and grasslands standing on hind legs to pull leaves from trees the american lion prowled from
01:07alaska to mexico using a massive body to chase bison horses and young mammoths the territory soared
01:13above western plains with enormous wings circling carcasses like a giant vulture over open ground
01:18the giant beaver swam through ancient wetlands carrying a body larger than many modern wolves
01:23through cold north american water the glyptodont crawled through southern grasslands with a domed
01:29armored shell looking like a huge prehistoric armadillo the stag moose walked through northern
01:34wetlands carrying broad antlers while feeding near lakes marshes and forest edges these vanished giants
01:40left bones teeth tracks and fossils across caves tar pits riverbanks and frozen ground one fossil
01:47tuscan north american soil can still reveal a lost world of giants
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