Research reveals that some prairie dog alarm calls encode remarkably specific information about humans and other predators.

If you ever have walked across a Nebraska prairie and noticed small dirt mounds dotting the landscape, heads popping from burrows and sharp barking, you likely have wandered into a prairie dog town.

When I headed to Montana to visit the American Prairie, I had bison on my mind. They are the quintessential plains animal and North America’s largest land mammal. But what I didn’t expect was for a ...