Decorate Your Desktop with Our Wildlife Photos

More than 2,000 bison roam the Triple U Buffalo Ranch northwest of Fort Pierre, South Dakota.

The Ottawa National Wildlife Refuge on the southern edge of Lake Erie in Ohio provides a resting and feeding place for birds such as the great blue heron.

A young pronghorn antelope wanders through the grass at South Dakota's Custer State Park, also home to bison, deer, bighorn sheep, elk, burros and mountain goats.

A turtle stretches out in its habitat at the National Mississippi River Museum & Aquarium in Dubuque, Iowa.

Quarter horses graze at the 90,000-acre Haythorn Land and Cattle Company ranch in Arthur, Nebraska.

Ducks swim in the Grand Basin, part of sprawling Forest Park in St. Louis. The Saint Louis Art Museum sits on the hill behind the lake.

Bison graze in South Dakota's Missouri River Valley, where many spots still provide a sense of the rolling sea of grass that Lewis and Clark explored more than 200 years ago

Pelicans are among the many bird species that stop to feast at Kansas' Cheyenne Bottoms Wildlife Area, the largest marsh in the interior of the United States.

A swan glides through the water at Riverside Park & Zoo in Independence, Kansas.

A deer peeks out between the trees along a cross-country ski trail in Minnesota's Boundary Country.

A seagull glides about Michigan's Mackinac Island State Park.

Michigan's remote Isle Royale National Park is home to a variety of wildlife, including moose, wolves, beaver, loons and fox.

A nonvenomous rough green snake curls down a tree at Meramec State Park in Missouri.

An elk peers out above the grass at Nebraska's Fort Niobrara National Wildlife Refuge, home to about 100 elk and 350 bison.

A yellow warbler perches on a branch at Horicon Marsh, Wisconsin.

A Canadian goose and goslings paddle through the water at Horicon Marsh, Wisconsin.

More than 80 types of butterflies live at the Sertoma Butterfly House in Sioux Falls, South Dakota.

A lion suns on a rock in Chicago's Lincoln Park Zoo.

A roseate spoonbill wades in the St. Louis Zoo's Cypress Swamp.

Prairie Dog State Park in northwestern Kansas is home to a sizable colony.

A frog peers out of the Wonder Pond at the Morton Arboretum Children's Garden in Chicago.

The upland sandpiper, sometimes called the Shorebird of the Prairie, makes its home in prairies and other grassy areas, such as Nebraska's Fort Niobrara National Wildlife Refuge.

Goats and other animals live on a farm at Bear Run Inn Cabins and Cottages in southeast Ohio's Hocking Hills region.