Yellowstone National Park – Wyoming and Montana
No list of places to spot wildlife is complete without America’s first national park — and for good reason. It abounds in bison, and bear and wolf sightings are not uncommon. In fact, the park is home to around 400 species of mammals, birds, fish, amphibians, and reptiles.
Yellowstone’s two sweeping valleys, Lamar and Hayden, not only offer a break from the traffic, crowds, and ubiquitous geysers, but they’re also your best bet for spotting various species of large mammal.