Life in the sea rebounded with a vengeance in the Devonian. Dozens of monstrous predators emerged, like the 40-foot long Dunkleosteus. Nearly everything was wiped out in Earth’s second mass extinction. But the stage was set for an explosion of life on land.
Take a journey through majestic primeval forests of the Urals. These protected sites are known for their extremes, where the fine side by side, and giant deer, and giant leviathan, weighing half a ton, and tiny animals. This also, in search of food, make their seasonal raiding Eurasian elk. Unlike other types of elk Eurasian elk live alone, so for the pregnant female elk stress of meeting with other animals usually leads to a fight. As soon as the snow begins to melt in the woods, baring the ground, a lone wolf set out in search of food, not disdaining the frozen remains of animals
On a high ridge in Newfoundland, Canada, nestled between the Atlantic Ocean and the borders of an old grove forest, a Red fox, the matron of her family group, gives birth yet again. Follow the pups as they grow and learn to hunt, adapt, and survive. Explore the family dynamic of these clever creatures as bonds are formed. But the vixen knows that not all her cubs will inherit these tall trees, crystal lakes, and the ocean spray. Before the snows come again, she will have to banish some of her offspring for the good of the family. We also hear from scientists in Madison, Wisconsin and Bristol, England, about their studies on urban Red foxes who are facing a much different challenge than their Canadian counterparts. And another scientist tracks how Red foxes are moving out to the Arctic tundra and surviving in one of the harshest landscapes.