George Sanker / Coyote (Canis latrans) standing on rocks at water's edge, sniffing, Yellowstone NP, Wyoming, USA, October

George Sanker / Coyote (Canis latrans) climbing over rocks carrying pup in mouth, Yellowstone National Park, Wyoming, USA, June

Diane McAllister / Five curious Coyote pups (Canis latrans) at the entrance of their den, looking up at the camera. Suburban southwest Reno, Nevada, USA, April

Piper Mackay / Head portrait of Coyote (Canis latrans) yawning, Bolsa Chica wetlands, Huntington Beach, California, USA

Patricio Robles Gil / Coyote (Canis latrans) walking over snow, Yellowstone NP, Wyoming, USA, October

Eric Baccega / Coyote (Canis latrans) Jasper National Park, Rocky Mountains, Alberta, Canada

Jeff Vanuga / Coyote {Canis latrans} in snow, USA, September

Thomas Lazar / Two Coyotes {Canis latrans} fighting on frozen pond, Kettle River, Minnesota, USA, winter

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

Nick Garbutt / Coyotes (Canis latrans) and Bison (Bison bison) in deep snow. Madison River Valley, Yellowstone National Park, Wyoming, USA.

Nick Garbutt / Coyotes (Canis latrans) walking in snow. Lamar River Valley, Yellowstone National Park, Wyoming, USA.

Claudio Contreras / Coyotes (Canis latrans) against sand dunes, Bahia Magdalena, Baja California Peninsula, Mexico, June

Charlie Summers / Greater Sandhill Cranes (Grus canadensis tabida) slowly move away from Coyotes (Canis latrans), Bosque del Apache, New Mexico, USA, December.

Laurent Geslin / Dead coyote (Canis latrans) on a motorway near Seattle, Washington State, USA

Laurent Geslin / Dead coyote (Canis latrans) on a motorway near Seattle, Washington State, USA

Aflo / Coyote (Canis latrans) in grassland, Yellowstone National Park, Wyoming, September

George Sanker / Coyote (Canis latrans) with Elk (Cervus canadensis) calf prey. Yellowstone National Park, Wyoming, June.

Nick Garbutt / Male Coyote (Canis latrans) walking against the wind. Hayden Valley, Yellowstone National Park, Wyoming, USA, February.

Nick Garbutt / Male Coyote (Canis latrans) urinating / scent marking. Hayden Valley, Yellowstone National Park, Wyoming, USA, February.

Nick Garbutt / Male Coyote (Canis latrans) walking through deep snow. Hayden Valley, Yellowstone National Park, Wyoming, USA, February.

Danny Green / Coyote (Canis latrans) on snow baring teeth in aggression display. Yellowstone, United States of America, February.

Mark Carwardine / Coyote (Canis latrans) Bosque del Apache National Wildlife Refuge, New Mexico, USA

Mark Carwardine / Coyote (Canis latrans) Bosque del Apache National Wildlife Refuge, New Mexico, USA

Mark Carwardine / Coyote (Canis latrans) Bosque del Apache National Wildlife Refuge, New Mexico, USA

Loic Poidevin / Coyote (Canis latrans) head portrait, Quebec, Canada, captive

Danny Green / Coyote (Canis latrans) walking along a bison track in snow. Yellowstone, USA, February.

Todd Mintz / Coyote (Canis latrans) standing on top of bale after harvest on the Canadian prairie, Saskatchewan, Canada, December

Todd Mintz / Coyote (Canis latrans) curled up on snow, resting on the Canadian prairie, Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) curled up on snow, resting on the Canadian prairie, Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) curled up on snow, resting on the Canadian prairie, Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) pair courtship behaviour on the Canadian prairie, Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) pair courtship behaviour on the Canadian prairie, Saskatchewan, Canada, February

George Sanker / Coyote (Canis latrans) swallowing Uinta ground squirrel (Urocitellus armatus) prey, Yellowstone NP, Wyoming, USA

George Sanker / Coyote (Canis latrans) sniffing plant, Yellowstone NP, Wyoming, USA, October

George Sanker / Coyote (Canis latrans) running, Yellowstone NP, Wyoming, USA, October

George Sanker / Coyote (Canis latrans) sniffing the ground, looking up, Yellowstone NP, Wyoming, USA, October

Loic Poidevin / Coyote (Canis latrans) pair, Omega Park, Canada, Captive, October

Todd Mintz / Coyote / American jackal / The prairie wolf (Canis latrans) pouncing while hunting, Regina, Saskatchewan, Canada.

George Sanker / Coyote (Canis latrans) with three pups, one feeding, Yellowstone National Park, Wyoming, USA, May

George Sanker / Coyote (Canis latrans) in grassland, Yellowstone National Park, Wyoming, USA, October

Todd Mintz / Coyote (Canis latrans) resting on snow portrait, Regina Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) resting on snow portrait, Regina Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) mating pair in snow, Regina Saskatchewan, Canada, February

Todd Mintz / Coyote (Canis latrans) mating pair playing in snow, Regina Saskatchewan, Canada, February

Charlie Summers / Coyote (Canis latrans) in snow with heavy winter coat, Yellowstone NP, Wyoming, USA

Shattil & Rozinski / Two Coyotes (Canis latrans) watching flock of Ring-billed gulls (Larus delawarensis) on frozen reservoir, Cherry creek state park, Denver, Colorado, USA, February

Shattil & Rozinski / Three Coyotes (Canis latrans) on snow covered ice of reservoir, Cherry creek state park, Denver, Colorado, USA, February

Charlie Summers / Coyote (Canis latrans) in semi-arid habitat. Yellowstone, Wyoming, USA, December.

Diane McAllister / Coyote (Canis latrans) mousing in a field of winter grasses pauses to watch the photographer. Lemmon Valley, Nevada, USA, January

Diane McAllister / Three Coyote pups (Canis latrans) sleeping outside the entrance to their den in the morning sunshine. Suburban southwest Reno, Nevada, USA, April

Diane McAllister / A Coyote pup (Canis latrans)wwith sleeping siblings. Suburban southwest Reno, Nevada, USA, April

Diane McAllister / Two Bison (Bison bison) watching as a Coyote (Canis latrans) feeds on a Bison carcass that was brought down by wolves a few days before. Yellowstone National Park, Wyoming, USA, May

Charlie Summers / Coyote (Canis latrans) pup looking out from its den entrance. Montana, USA, June.

Charlie Summers / Coyote (Canis latrans) pup standing by a cliff. Montana, USA, June.

Charlie Summers / Coyote (Canis latrans) pup looking out from its den entrance under a cliff. Montana, USA, June.

Charlie Summers / Coyote (Canis latrans) den hollowed out under a rock cliff. Montana, USA, June.

Charlie Summers / Four inquisitive Coyote (Canis latrans) pups camouflaged against rocks, Montana, USA

Charlie Summers / Coyote (Canis latrans) portrait camouflaged against background, Montana, USA

Charlie Summers / Coyote (Canis latrans) frozen at alert, Montana, USA

Charlie Summers / Coyote (Canis latrans) crossing ground, alert, Montana, USA

Charlie Summers / Coyote (Canis latrans) portrait whilst hunting in snow covered meadows, Yellowstone National Park, Wyoming, USA

Charlie Summers / Coyote (Canis latrans) hunting / pouncing on small rodents in the snow, Wyoming, USA

Charlie Summers / Coyote (Canis Latrans) out hunting on a cold morning after a snow storm, Wyoming, USA

Piper Mackay / Head portrait of Coyote (Canis latrans) Bolsa Chica wetlands, Huntington Beach, California, USA Not available for ringtone/wallpaper use.

Piper Mackay / Portrait of Coyote (Canis latrans) walking, Bolsa Chica wetlands, Huntington Beach, California, USA

Piper Mackay / Portrait of Coyote (Canis latrans) walking, Bolsa Chica wetlands, Huntington Beach, California, USA

Patricio Robles Gil / Coyote (Canis latrans) walking along road, Yellowstone NP, Wyoming, USA, October

Patricio Robles Gil / Coyote (Canis latrans) searching for food, Yellowstone National Park, Wyoming, USA, February

Patricio Robles Gil / Coyote (Canis latrans) lying in snow howling, Yellowstone National Park, Wyoming, USA, February

Patricio Robles Gil / Two Coyotes (Canis latrans) one howling the other lying on snow, Yellowstone National Park, Wyoming, USA, February

Patricio Robles Gil / Coyote (Canis latrans) walking through snow, Yellowstone National Park, Wyoming, USA, February

Patricio Robles Gil / Coyote (Canis latrans) feeding on carcass, Yellowstone National Park, Wyoming, USA, February

Patricio Robles Gil / Coyote (Canis latrans) feeding on carcass remains, Yellowstone National Park, Wyoming, USA, February

George Sanker / Coyote (Canis latrans) mother leading pups down rocky cliff, Yellowstone National Park, Wyoming, USA, June

George Sanker / Coyote (Canis latrans) howling at sunset, Yellowstone National Park, Wyoming, USA, June

George Sanker / Coyote (Canis latrans) walking past an American buffalo / Bison (Bison bison) calf, Yellowstone National Park, Wyoming, USA, May

George Sanker / Coyote (Canis latrans) mother and pup at den entrance in snow, Yellowstone National Park, Wyoming, USA, May

George Sanker / Coyote (Canis latrans) mother with pup in snow, Yellowstone National Park, Wyoming, USA, May

George Sanker / Coyote (Canis latrans) mother carrying pup to den, Yellowstone National Park, Wyoming, USA, June 2007

George Sanker / Female Coyote (Canis latrans) walking down steep cliff, Yellowstone National Park, Wyoming, USA, June

George Sanker / Coyote (Canis latrans) mother playing with two pups in snow, Yellowstone National Park, Wyoming, USA, May

George Sanker / Coyote (Canis latrans) mother with two pups playing, in snow, Yellowstone National Park, Wyoming, USA, May

Eric Baccega / Coyote (Canis latrans) Jasper National Park, Rocky Mountains, Alberta, Canada

Mark Payne-Gill / Coyote Canis latrans} head portrait, British Columbia, Canada Captive

TOM MANGELSEN / Coyote {Canis latrans} camouflaged on cliff ledge, Grand Canyon, Arizona, USA

John Cancalosi / Coyote {Canis latrans} Grand Canyon National Park, Arizona, USA

Tim Laman / Coyote (Canis latrans) tracks in Anza-Borrego Desert State Park, California. Mar 2004.

Shattil & Rozinski / Coyote {Canis latrans} on prairie, Colorado, USA

Shattil & Rozinski / Three Coyote pups {Canis latrans} Rocky Mt Arsenal NWR, Colorado, USA

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

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

Rolf Nussbaumer / Coyote {Canis latrans} adult, Rio Grande Valley, Texas, USA, May

Philippe Clement / Coyote (Canis latrans) warning sign. Organ Pipe Cactus National Monument, Arizona, USA

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

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

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