Rodents

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Smooth fur that is usually dusty-gray, brownish-gray, or gray on top and light gray on the belly. Main difference between the deer mouse is the house mouse's tail is naked and uniformly dark.

Bi-colored, ranging from pale gray to deep reddish-brown on top and white underneath. Its tail is about half the length of its combined head and body length and is covered with short hairs.  

They have large ears, big eyes, and are a grayish-brown color. Will build complex nests out of objects that they collect like sticks, plants, shiny objects and other treasures scavenged. 

 Are also called meadow mice. These destructive lawn pests have compact, chunky bodies, small eyes, small ears, and short tails. 

6 known species are found in Colorado. The most common two are: Wyoming ground squirrel, and golden-mantled ground squirrel.

Colorado is home to 3 species of tree squirrel: fox squirrel, pine squirrel, and Aberts' squirrel. Uncommon, but not impossible, structural nuisance pests.

 The largest members of the squirrel family. Can be two feet in length and weigh up to 11 pounds. They have reddish-brown fur and a yellow belly.

Do not get too close to this prickly rodent. Colorado's second largest rodent is about 25 to 35-inches long, have an 8 to 10-inch tail, and weigh between 12 to 35-pounds.  

North America's largest rodent will have a head-body length of 31 to 47 inches, a 9-to-19-inch length tail, and a weight of 24 to 66 pounds.