Field Guide

Mammals

Showing 1 - 10 of 13 results
Media
Image of a gray squirrel
Species Types
Scientific Name
Sciurus carolinensis and Sciurus niger
Description
The eastern gray squirrel and eastern fox squirrel are both very common in Missouri. Their names describe their general coat color: the first is grayish, the other a foxy red.
Media
Image of a feral hog
Species Types
Scientific Name
Sus scrofa
Description
Feral hogs could cost Missouri millions of dollars in agricultural, environmental, and property damage. As they root and wallow, they plow the soil to depths of 2–8 inches — sometimes for many acres! And this is just the beginning of the trouble they can cause to humans, livestock, and the environment.
Media
Photo of four gray myotises clinging to a cave ceiling.
Species Types
Scientific Name
Myotis grisescens
Description
Gray myotises are difficult to distinguish from other mouse-eared bats. A key identifying feature of the gray myotis is that its wing is attached to the ankle and not at the base of the toes. It’s an endangered species.
Media
Collared, grayish-tan wolf in open field
Species Types
Scientific Name
Canis lupus
Description
The gray wolf originally ranged throughout Missouri, but with settlement the species was gradually exterminated. While there is no evidence of a breeding population in the state, wolves are listed as a protected species in Missouri, and they occasionally wander into Missouri from northern states.
Media
Photo of an Indiana myotis hanging from a cave ceiling.
Species Types
Scientific Name
Myotis sodalis
Description
The Indiana myotis, or Indiana bat, summers along streams and rivers in north Missouri, raising its young under the bark of certain trees. It is an endangered species.
Media
Photo of least weasel
Species Types
Scientific Name
Mustela nivalis
Description
This mouse-sized weasel is found only in Missouri’s northern counties, and abundance varies locally and seasonally, depending on fluctuating rodent numbers—their favorite food.
Media
Photo of a little brown myotis hanging from cave wall with lesions on its wrist.
Species Types
Scientific Name
Myotis lucifugus
Description
The little brown myotis (little brown bat) is one of our most common bats, but populations are declining. White-nose syndrome has taken a heavy toll in northeastern states. This species is now listed as vulnerable across its range.
Media
Photo of long-tailed weasel
Species Types
Scientific Name
Mustela frenata
Description
Long-tailed weasels are small but voracious predators. They are rare in our state but are most common in the south-central and southwestern portions. In summer, they are brown with yellow beneath. In winter their fur is paler or white. The tail has a black tip.
Media
Image of an armadillo
Species Types
Scientific Name
Dasypus novemcinctus
Description
There’s no other animal in Missouri that can be mistaken for an armadillo! Fifty years ago, they were not considered residents, but now they are regularly found in the southern half of the state.
Media
Raccoon in tree
Species Types
Scientific Name
Procyon lotor
Description
When you see the black mask and striped tail of this medium-sized mammal, you know you’ve spotted a raccoon. These nocturnal omnivores are clever and adaptive.
See Also

About Mammals in Missouri

More than 70 species of wild mammals live in Missouri: opossums; shrews and moles; bats; rabbits; woodchuck, squirrels, beaver, mice, voles, and other rodents; coyote, foxes, bear, raccoon, weasels, otter, mink, skunks, bobcat, and other carnivores; deer and elk; and more. Most of us recognize mammals easily — they have fur, are warm-blooded, nurse their young, and breathe air.