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Rocky Mountain Bighorn Sheep

Mammal - Ovis canadensis

Colorado's state animal and the mammalian mascot of Colorado Parks and Wildlife, the Rocky Mountain bighorn sheep spend their lives on the cliffs and rocky faces across central and western Colorado.

Yellow-Bellied Marmot

Mammal - Marmota flaviventris

The marmot is the largest of the Colorado ground squirrels, a close relative of the groundhog (woodchuck) of the East and Midwest. 

Harvest Mice

Mammal - Genus Reithrodontomys

Harvest mice are small rodents that inhabit environments across Colorado.

Porcupine

Mammal - Erethizon dorsatum

This prickly tree-dweller is second in size of Colorado rodents only to the beaver.

Ringtail

Mammal - Bassariscus astutus

This sleek, nocturnal mammal is a rarely-seen resident of Colorado's desert landscapes.

Virginia Opossum

Mammal - Didelphis virginiana

The United States' only marsupial, the Virginia Opossum is a nocturnal animal that can live in almost any treed environment.