If you've ever been to Yellowstone National Park, you know that it can be the kind of experience that stays with you forever.

Yellowstone National Park has long been home to thousands of bison, the area’s most iconic animal. Almost daily, tourists stop their cars to allow streams of these massive mammals to cross the roads.

“One of my favorite adaptations of the bison is the hump,” said Alex Watson, regional naturalist for the Minnesota Department ...