The Great Valley was home to some of America's greatest legends. Today, the animals hunted by the likes of Davy Crocket and Daniel Boone still strive in this little-known strip of wilderness.
At America's centre, Three Rivers Wild - the Mississippi, the Missouri and the Ohio - combine and transform into a behemoth that splits the nation. Thousands of snow geese arrive with winter, and river otters hunt within breaks in the ice.
Sharing the land with farmers and their tools, it's safer for wildlife to stay on the fringes but temptation comes in many forms - a freshly baked pie for a housebreaking raccoon or a bustling chicken coop for a long-tailed weasel.
East meets the Wild West in The Badlands of South Dakota. Herds of bison roam the grasslands as much at home as the mustangs on a nearby mountain plateau while Pronghorn and elk test their antlers for the right to mate.
The northern Land of Lakes is a lush realm of forests and wet bogs - but in winter, it's governed by snow and ice. Timber wolves search widely with their powerful noses while Great Grey Owls plunge deep into the snow for a meal.
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