Wildlife in Yellowstone National Park

Naturalists have logged 46,295 research-grade observations across the 30 most-recorded species in Yellowstone. The most frequently seen is the American Bison, with 10,085 recorded sightings.

Mammals account for the largest share of what gets recorded there (14 of the species listed here), followed by birds (10).

Rarer finds confirmed in Yellowstone include Grizzly Bear and Gray Wolf - uncommon enough that a sighting is worth logging.

More wildlife near Yellowstone