The diverse and abundant wildlife of Yellowstone National Park is just as famous as its mesmerizing geysers. There are as many as 300 species of birds in the park, you may also spot 16 different species of fish, 5 species of amphibians, 67 mammal species, and 6 reptile species. In total, it is believed that the national park is home to more than 200 species of animals – from bald eagles to grizzly bears, black bears, bison, wolves, and elks.