Over 90 species of birds have been documented inside the monument.
While the monument has 44 mammals documented, only 6 or 7 are commonly seen.
Fossil Butte has one non-venomous snake and one lizard.
Small and elusive, the monument's 3 amphibians are rarely seen.
Fish are not found regularly in the park, but some can be found just outside park boundaries.
Last updated: September 27, 2022