This concise site contains photos of North American mammals along with a map showing where they currently can be found. Includes links to other mammal sites.

Brief overview of the black bear and accompanying photos demonstrate the physical adaptations that allow this animal to eat and survive in their habitat.

Brief overview of the bison and accompanying photos demonstrate the physical adaptations that allow this animal to survive in its habitat.

Astrophysicist Neil deGrasse Tyson has made "Popularizing science a personal passion." Tyson's latest book, Origins, is the starting point here for a discussion of dark matter, intelligent life in our solar system, the possibility of...

This website, developed by the National Museum of American History, provides standards-based online resources for teaching and learning American history. An array of teacher lessons, activities, interactive media, and artifacts tag this...

Northern Collared Lemmings live farther north than any other rodent, making their homes on the Arctic tundra. They are among the few North American mammals to turn completely white in winter. Learn more about the Dicrostonyx...

Some 1.6 million gray myotis - almost the entire North American population - spend the winter together in the same nine caves, deep in hibernation. Learn more about the Myotis grisescens, more commonly known as a Gray Myotis, in this...

Common Minke Whales are the second-smallest baleen whales. They are identifiable by a narrow, pointy snout, and most seen in North American waters have a white stripe on the back of each flipper. Learn more about the Balaenoptera...

The Swamp Rabbit is the largest North American cottontail, but has relatively short ears in proportion to its size. It forages for grasses, sedges, some tree seedlings, and other plants in marshy lowlands of the south-central United...

The least chipmunk is the smallest and most widely distributed North American chipmunk. It occurs in a variety of habitats, from coniferous forests to meadows to sagebrush desert, feeding primarily on seeds but also eating flowers, buds,...

The eastern small-footed myotis is one of the smallest North American bats. It has a limited range, occurring only in eastern deciduous and coniferous forests. Learn more about the Myotis leibii, more commonly known as an Eastern...

Tundra Voles have the northernmost distribution of any North American species of Microtus. They are widespread in northern latitudes in Eurasia, too, where they are known as Root Voles, and probably migrated to North America across the...

Very little is known about the natural history of Preble's Shrew, which has been found in widely separate localities in much of the western United States. Specimens have been collected at elevations of 1,280 m in Oregon and 2,750 m in...

This dark gray species is actually in the black dolphin family. It is smaller than almost all the other North American members of this family and is approximately the size of a bottlenose dolphin. Learn more about the Peponocephala...

The adaptable, omnivorous, diurnal Eastern Gray Squirrel is the native American mammal people most frequently see east of the Mississippi River. It prefers to den inside trees, but will construct large nests of leaves in the canopy if...

Eastern Moles have the widest distribution of any North American mole and are common throughout most of the eastern United States where soils are favorable. They prefer moist loamy or sandy soils and are scarce or absent in heavy clay,...

The short-finned pilot whale is one of two species of the genus Globicephala living in North American waters, mostly in tropical to temperate waters of the continental shelf. "Globicephala" translates directly to the most prominent...

Found along the North American coastline from Nova Scotia to the Bahamas, True's beaked whale also inhabits temperate waters off the coast of Europe, and there are records of the species from near Australia and South Africa. Squid beaks...

Although Western Gray Squirrels are diurnal, they are secretive by nature and stay away from humans as much as possible. However, they are comparatively frequently hit by automobiles, perhaps because they lack experience of human...

Hopi chipmunks are naturally timid, and even individuals born in captivity never become tame. Like Panamint chipmunks, they live in southwestern pinyon-juniper forests and nest in rock crevices or piles of broken rock. Learn more about...

Of all North American pocket gophers, the Northern Pocket Gopher has the widest distribution, across most of the western United States and south-central Canada, and it occurs in the greatest variety of habitats. Only habitats with a...

Townsend's Pocket Gophers require deep, moist soils of river valleys and ancient lake beds. Other pocket gophers that are found in the same region, in the northern Great Basin, prefer different soil types: Botta's Pocket Gopher is...

Bushy-tailed Woodrats are highly territorial. A male will permit a female in his territory, but not another male. Learn more about the Neotoma cinerea, more commonly known as a Bushy-tailed Woodrat, in this easy-to-read species overview...

Like other heteromyid rodents, Arizona Pocket Mice are solitary creatures. They spend the day in underground burrows, emerging only at night. Learn more about the Perognathus amplus, more commonly known as an Arizona Pocket Mouse, in...