A male gray wolf in Mongolia traveled 4,503 miles in one year. A female Alaska wolf managed 3,500 miles in the same time frame. Caribou in Alaska and Canada cover 3,000 miles or so “during migration to and from spring calving grounds on the breezy northern tundra.” These and other similar findings are the work of Kyle Joly, a wildlife biologist with the National Park Service who wondered “which animal travels farthest across the landscape in one year,” and set about finding out.

 

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