Shattil & Rozinski / American bobcat (Lynx rufus) walking on a pavement in Denver, Colorado, USA, December.

Shattil & Rozinski,Shattil & Rozinski / Red fox (Vulpes vulpes) playing with a dead squirrel in a garden Denver, Colorado, USA, July.

Shattil & Rozinski,Shattil & Rozinski / Black bear (Ursus americanus) cub climbing a fence, Minnesota, USA, May.

Shattil & Rozinski / Juvenile American black bear (Ursus americanus), brown phase, looking for food in a car, Denver, Colorado, USA, July.

Shattil & Rozinski,Shattil & Rozinski / Mule deer (Odocoileus hemionus), with the Denver skyline and Rocky Mountains in the background, Denver, Colorado, USA, November.

Shattil & Rozinski / Juvenile American black bear (Ursus americanus), brown phase, standing upright and leaning on a car, Denver, Colorado, USA, July.

Shattil & Rozinski / Reid Glacier, Glacier Bay National Park, Alaska, USA, May 2011

Shattil & Rozinski / Sea otter (Enhydra lutris) mother and pup off the coast, British Columbia, Canada, Pacific Ocean, September

Shattil & Rozinski / Kelp floating on water at the edge of the Great Bear Rainforest, British Columbia, Canada, September

Shattil & Rozinski / Juvenile American dipper (Cinclus mexicanus) at stream, British Columbia, Canada, September

Shattil & Rozinski / Pacific white-sided dolphin (Lagenorhynchus obliquidens) surfacing off the coast of British Columbia, Canada, September

Shattil & Rozinski / Herd of horses running through winter landscape, Brush Creek Ranch, Saratoga, Wyoming, USA, February 2010

Shattil & Rozinski / Herd of horses running through winter landscape, Brush Creek Ranch, Saratoga, Wyoming, USA, February 2010

Shattil & Rozinski / Broad-tailed hummingbird (Selasphorus platycercus) hovering over Rocky Mountain Irises (Iris missouriensis) flowering in pasture, Wyoming, USA, North America

Shattil & Rozinski / Horses (Equus caballus) galloping in pasture on Wyoming ranch, USA, North America

Shattil & Rozinski / Juvenile Swift fox (Vulpes velox) stalking prey on the shortgrass prairie of Southern Wyoming, Wyoming, USA

Shattil & Rozinski / Swift fox (Vulpes velox) running, backlit, Wyoming, USA

Shattil & Rozinski / Large flock of Red winged blackbirds (Agelaius phoeniceus) flying across road, Lower Rio Grande Valley, Texas, USA

Shattil & Rozinski / Swift fox (Vulpes velox) cubs near den, Wyoming, USA

Shattil & Rozinski / Mule deer (Odocoileus hemionus) buck, Cherry Creek State Park, Denver, Colorado, USA

Shattil & Rozinski / Quaking aspen tree (Populus tremuloides) leaves and twigs coated with ice, over stream, Southern Colorado, USA, October

Shattil & Rozinski / Quaking aspen trees (Populus tremuloides) in autum, San Luis Valley, Colorado, USA

Shattil & Rozinski / Quaking aspen trees (Aspen tremuloides) in autumn, San Luis Valley, Colorado, USA

Shattil & Rozinski / Wild Horses / Mustangs (Equus caballus) in the Red Desert, Wyoming, USA

Shattil & Rozinski / Wilson's phalarope (Phalaropus tricolor) flock flying, Blanca Wetlands, San Luis Valley, Colorado, USA

Shattil & Rozinski / Cumulus clouds over the Red Desert, Wyoming, USA

Shattil & Rozinski / Elk (Cervus canadensis) herd grazing, Horseshoe Park, Rocky Mountain NP, Colorado, USA

Shattil & Rozinski / Four Mountain goats (Oreamnos americanus) looking down from rocks, Mt Evans, Rocky Mountains, Colorado, USA

Shattil & Rozinski / Brown bear (Ursus arctos) mother grazing while cub rolls on the ground, Alaska, USA

Shattil & Rozinski / Ocelot (Felis pardalis) hiding in grass, captive, USA

Shattil & Rozinski / Aspen tree {Populus tremula} leaves and trunks in autumn, USA

Shattil & Rozinski / Fallen Aspen leaves {Populus tremula} on rocks in river in autumn, USA

Shattil & Rozinski / Swirling leaves of Aspen tree {Populus tremula} floating on water surface in autumn, USA

Shattil & Rozinski / Swirling leaves of Aspen tree {Populus tremula} floating on water surface in autumn, USA

Shattil & Rozinski / Broad tailed hummingbird {Selasphorus platycercus} hovering, USA

Shattil & Rozinski / Thunderstorm, heavy rain and rainbow under cumulus clouds, USA

Shattil & Rozinski / Morning glory {Ipomoea sp} inside flower close-up, USA

Shattil & Rozinski / Cowboy rounding up horses at dawn, Colorado, USA. Model released

Shattil & Rozinski / Bullsnake {Pituophis catenifer sayi} ready to strike, Colorado, USA

Shattil & Rozinski / Coyote {Canis latrans} in snow, Colorado, USA

Shattil & Rozinski / Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA

Shattil & Rozinski / Red fox {Vulpes vulpes} cubs playing, Rocky Mt Arsenal NWR, Colorado, USA

Shattil & Rozinski / Grizzly bear {Ursus arctos horribilis} sitting, lifting paw, Alaska, USA

Shattil & Rozinski / Hoodoos in Goblin Valley, Utah, USA, 2005

Shattil & Rozinski / Rock arch viewed through fog in winter, Arches National Park, Utah, USA, 1992

Shattil & Rozinski / Desert sunflowers flowering on dark sand dunes, Colorado, USA, 1995

Shattil & Rozinski / Man wearing Level-B Hazmat (Hazardous Materials Contamination) Suit, USA, 1993. Model released.

Shattil & Rozinski / Aspen trees in autumn colour, Colorado, USA, 1993