Despite being North America's largest and heaviest land-dwelling mammal, Bison can reach speeds up to 35mph, and are known to run faster than a horse in a quarter mile.

Looking east along RT89 South to Gardiner, Montana.

Coyotes are a common, abundant predator and the consummate scavenger in Greater Yellowstone, and do their part to clean up carcasses wherever they can find them.

Since the Gray Wolf's (Canis lupus) reintroduction to Yellowstone in 1995, Elk has been its primary prey, thinning and altering the even-toed ungulate's herd size.

Another snowy view off RT89 South, just a little north of Gardiner, Montana.

A young Bighorn Sheep stops to watch us...where's his camera!

Still another photo-op - a great view of the Gallatin National Forest off RT89, Montana.

Animals seem not to be bothered by the decreased tourist population traversing the park in winter.

While the Rocky Mountain Red Fox is not as numerous as Coyotes in the park, they always seem to be available for a great photo.

Keep your distance. This 2000 pound mammal can get aggressive when disturbed.

Depending on the elevation, Yellowstone receives 150 to 400 inches of snow each year.

While its intensity is unpredictable, Old Faithful can shoot hot steam and water up to 180 feet into the air approximately every 80 minutes.

Color is a rare commodity during Yellowstone's winter months.

With less than 500 reported Bighorn Sheep in the park, we were lucky to see and photograph this beautiful mammal.

Surprisingly, Trumpeter Swans (Cygnus buccinator) are a rare inhabitant of Greater Yellowstone's Ecosystem, with less than 100 residents.

These Bison seem to have no problem enduring Yellowstone's strong winds, heavy snowfall and overall harsh winters.

Yellowstone's landscape is home to the world's largest collection of geysers.

Despite this dainty animal stopping to smell the roses, or better yet, possibly eyeing its next meal, this smart Coyote or Canis latrans, can easily reach speeds up to 40mph.

Temperature this day was negative 20 degrees.

Undisputable, a meal of a vole, mouse or other small animal will be the reward for the Fox's keen hearing (and eyesight). Seen here, this Fox is ready to pouce on an unsuspecting prey...bon appetit.

Love them from a distance: they are unpredictable and can be dangerous.

While it may not be as impressive as the Grand Canyon, the Grand Canyon of Yellowstone is still an inspiring sight with its 1200 foot depth and 1500-4000 foot width. The Yellowstone River is the force that carved this magnificant canyon.