Bison in Yellowstone
There is no way to miss bison in Yellowstone. Estimated at 4,900 in July 2014, the bison herd of Yellowstone is the only one in the USA dating back to prehistoric times. Bulls weigh up to 900 kgs, cows up to 450 kgs. Once more numerous than all humans on the Northern American continent, bison were slaughtered to the brink of extinction in the 19th century. Count your blessings you can still see these wonderful animals roaming in the wild.