And as more cars race up and down the highway to and from Yellowstone National Park and neighboring areas, more elk, deer and pronghorn meet their fates on the bumpers of trucks, sedans and SUVs.

And Greater Yellowstone, the 22.6-million-acre region in Wyoming, Montana, and Idaho, contains the longest known pathways for mule deer and pronghorn ever documented: overland routes that rival in ...

Through this assemblage of predators scampered a svelte herbivore, reminiscent of a deer but most closely related to the giraffe: the pronghorn. To spot its fearsome enemies on the open plains, ...