Yellowstone, which is set over three different states, was created as the first national park in America on March 1, 1872. Today, the park is celebrating 150 years of welcoming people to marvel at its colorful hot springs, geysers, and herds of bison.
While wolverines are extremely rare, they aren't the only elusive animal in Yellowstone. The park is also home to just over 100 known Canada lynx, which have been listed as "threatened" in the lower 48 states, according to the NPS.
And at least eight packs with 95 gray wolves live in the park as of Dec. 2021 after wild wolves from Canada and northwest Montana were released in Yellowstone in the 1990s.
Alison Fox is a contributing writer for Travel + Leisure. When she's not in New York City, she likes to spend her time at the beach or exploring new destinations and hopes to visit every country in the world. Follow her adventures on Instagram.