A hiker stands atop the mountains contemplating the magnificent Teton range

a close-up of a bighorn ram's face.

a bighorn sheep lamb looking uncomfortable on a wet day.

head, face, and horns of an old bighorn sheep ram.

the worn horns of a bighorn sheep ram curl around a watching eye.

a bighorn sheep's snout licking the side of a car mirror.

a herd of three bison migrate through the historic roosevelt arch gateway in yellowstone national park

bison fording a creek with a dramatic mountain range and cliffs in background

bison herd grazing in big green field with western homestead barns and wyoming teton mountains

a herd of bison jumping over a wooden fence.

two bison yawning and appear to be singing

black bear balanced in bush with colorful leaves eating berries snout

A black bear feeds on berries and rose hips in yellowstone national park

a giant backlit geyser steams and reflects in a hot spring in yellowstone national park

a bobcat hunts along snowy river edge

a bull elk in yellowstone national park with big antlers bugling and rutting in the mating season

a bull moose with large antlers and patterned velvet feeds in the willows

A bull bison with raised tail poses in profile against a prairie and treeline

bull stag elk and his long shadow against yellow green lawn shot from overhead

two bull elk clash antlers

a close-up of a bull elk with big antlers bugling at the camera during the fall rut.

a bull elk in rut corrals and circles a herd of females.

the head and antlers of a bull elk in the winter. A herd of elk is in the background.

a bull moose bust with big antlers in nice autumn light

a huge geyser in Yellowstone billowing steam in the winter

a coyote catches a mouse and is mid-way through swallowing it whole.

a coyote approaches the camera, hunting along a trail in the deep blue and white snow

a coyote standing in the snow and gazing beyond the frame

a coyote pouncing on a rodent.

Mount moran rises above a layer of fog that has coated an aspen forest in frost

a bighorn sheep lamb approaches and looks curiously at the camera. The sheep is against a pure white background

a bison scratches on a sign reading: Danger, do not approach wildlife

a group of elk standing in a river cross into a backlit golden clearing in a misty forest

a baby fox kit jumps into tall grass toward camera while playing with another pup.

a mother red fox and two kits play in grass near the wall of a log cabin

a wooden rail fence in a snowy field with a frosty forest and jagged teton mountains under a blue sky

an iconic frosty bison seated near an icy riverbank in Yellowstone National Park

a dead frosted petrified forest in Yellowstone National Park

funny awkward moose eating branches

a glowing orange thunderhead rolls over the geysers and hot springs of Yellowstone National Park

colorful grand prismatic hot spring in yellowstone national park aerial

A large mountain, Grand Teton, is framed by yellow aspens growing along the roadway

a hunting great gray owl (strix nebulosa) extends talons and opens wings against dark background

a great gray owl perches in a dense forest surrounded by branches and lichens

a sow grizzly bear mother leads two cubs along a ridge in front of a dramatic mountain range

a grizzly bear standing up in a grassy meadow

a group of horses graze under Mount Moran in Grand Teton National Park.

an autumn scene in the rocky mountains featuring a moose in a reflecting stream under an orange forest

a mother moose nurtures her twin calves as they forage in the forest, the calf reaches to eat a twig

a moose stands in snow-covered sagebrush in a blizzard. trees in background.

bull and cow moose courting in still water with perfect ripples beneath huge snow dusted rocky mountains

a moose forages in a snowy landscape by a creek

two bull moose locking antlers in a fight during the fall rut

a bull and cow moose in the dim morning fog

a neon blue mountain bluebird perches on a branch on a rainy day

the teton mountains reflected in old historic window panes and old frame.

a buck pronghorn's neck and head against a pure blue sky. The animal is smiling.

pronghorn bucks spar and rut while other antelope watch, green background in yellowstone park

A group of pronghorn antelope with one buck and many females.

a raven against a snow-white background caws at the camera.

a pair of ravens perched on a rocky outcrop looking out over the distant snowy cliffs

a headshot of a raven against a green background.

close-up of a red fox gazing beyond the camera

the snowy teton range with bright orange foliage of aspen trees

sun rays shining through foggy aspen forest in the morning

sun rises through the smoke and steam in a forest

the snowy teton mountain range reflected in the window frame of a log cabin

grand teton with the snake river flowing in the foreground through a forest at sunrise.

the famous moulton barn on mormon row in grand teton national park in winter alpenglow.

the snowy teton mountain range with a pure snowy field in the foreground interrupted by a line of tracks and a wooden fence

a horse moves through a peaceful pasture in Grand Teton National Park while a thunderstorm rolls dramatically over the mountain range.

an ermine pops his head through the snow and looks at the camera.

the alpha female of Yellowstone's Canyon wolf pack in profile against a yellow field

a curious white ermine (weasel) with pink ears stands facing camera in deep snow