Andrew Parkinson / Red Fox (Vulpes vulpes) in meadow of buttercups. Derbyshire, UK, June. British Wildlife Photographer of the Year (BWPA) competition 2012, 'Outdoor Photography editor's choice' category. (Non-ex)

Erlend Haarberg / Male Arctic fox (Alopex lagopus) in summer coat, standing on hind legs in flower meadow, Hornstrandir Nature Reserve, West-fjords, Iceland, July

David Welling / Utah Prairie Dog (Cynomys parvidens) standing on watch outside their burrow. Bryce Canyon National Park, Utah, USA, August.

Charlie Summers / Three Western Black-tailed Prairie Dogs (Cynomys ludovicianus) at entrance to burrow. Cheyenne River drainage south of Hot Springs, South Dakota, USA

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) engaging in Jump-yip behavior - A strong arch of the back or "jump" followed by a shrill "yip" - Thought to occur when a predator has left the area and in...

Charlie Summers / Black-tailed Prairie dog (Cynomys ludovicianus) on hind legs, emitting territorial call, Downtown Parker, Colorado, USA, North America

Colin Varndell / Three month old Red fox (Vulpes vulpes) cub walking through meadow, Dorset, England, UK June

Wild Wonders of Europe / O. Haarberg / Arctic fox (Alopex lagopus) in wild flower meadow, dark summer phase, Hornstrandir, Iceland, July 2008

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

Donald M. Jones / Black-tailed Prairie Dog (Cynomys ludovicianus) standing and barking, eastern Montana

Pete Oxford / Black-tailed Prairie Dog (Cynomys ludovicianus) looking for danger, Devil's Tower National Monument, Wyoming

Konrad Wothe / Black-tailed Prairie Dog (Cynomys ludovicianus) pair interacting, North America

Nigel Bean / Black tailed prairie dogs at burrow entrance{Cynomys ludovicianus} Colorado, USA

Thomas Lazar / Black tailed prairie dog (Cynomys ludovicianus) alert female, Custer State Park, South Dakota, USA

Shin Yoshino / Black-tailed Prairie Dog (Cynomys ludovicianus) pair touching noses for identification, Colorado

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) trio at burrow entrance, South Dakota

Yva Momatiuk & John Eastcott / Black-tailed Prairie Dog (Cynomys ludovicianus) eating grass in summer, Devil's Tower National Park, Wyoming

Konrad Wothe / Black-tailed Prairie Dog (Cynomys ludovicianus) alert pair, North America

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) town with animals near burrows, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) barking while standing atop burrow, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) pair nuzzling to communicate, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) sitting at burrow entrance, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) barking while standing on its hind feet and raising the head back, a behavior known as jump-yip calling, Wind Cave National Park, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) pair nuzzling to communicate, South Dakota

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) in burrow with American Bison (Bison bison) and Ponderosa Pines (Pinus ponderosa), Wind Cave National Park, South Dakota

David Kjaer / Black tailed prairie dogs, Arizona, USA

Donald M. Jones / Black-tailed Prairie Dog (Cynomys ludovicianus) on mound, UL Bend National Wildlife Refuge, north-central Montana

LYNN M. STONE / Male Border Collie sitting in early summer meadow; Marengo, Illinois, USA

LYNN M. STONE / Male Border Collie in early summer meadow; Marengo, Illinois, USA

LYNN M. STONE / Male Border Collie sitting in early summer meadow; Marengo, Illinois, USA

LYNN M. STONE / Female black Labrador Retriever amongst prairie wildflowers; Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever amongst prairie wildflowers; Illinois, USA

LYNN M. STONE / Two female golden Labrador Retriever amongst prairie wildflowers; Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever in prairie wildflowers; Geneva, Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever part hidden by prairie wildflowers; Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever in prairie wildflowers; Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever amongst prairie wildflowers; Geneva, Illinois, USA

LYNN M. STONE / Female golden Labrador Retriever in prairie wildflowers; Illinois, USA

Todd Mintz / Weimaraner dog in prairie field pointing, Saskatchewan, Canada, April

Todd Mintz / Red fox (Vulpes vulpes) resting on the Canadian prairie, Saskatchewan, Canada, February

Todd Mintz / Red fox (Vulpes vulpes) resting on the Canadian prairie, Saskatchewan, Canada, February

Erlend Haarberg / Male Arctic fox (Alopex lagopus) barking, in summer coat, Hornstrandir Nature Reserve, West-fjords, Iceland, July

Roland Seitre / Black-tailed Prairie Dog (Cynomys ludovicianus) by its burrow. This species is the main prey of the Black-tailed Ferret, successfully reintroduced into the area. South Dakota, March 2002.

Roland Seitre / Black-tailed Prairie Dog (Cynomys ludovicianus) with small baby. This species is the main prey of the Black-tailed Ferret, successfully reintroduced into the area. South Dakota, March 2002.

Roland Seitre / Black-tailed Prairie Dog (Cynomys ludovicianus), the main prey of Black-footed Ferrets, successfully reintroduced into the area. South Dakota, March 2002.

Roland Seitre / Black-tailed Prairie Dog (Cynomys ludovicianus) standing alert on its burrow mound. This species makes up nearly all of the diet of the Black-tailed Ferret, successfully reintroduced into the area. So...

Roland Seitre / Sign for a pest control company. Indigenous prairie dogs were exterminated in the area throughout the 20th century to protect crops. Custer, South Dakota, March 2002.

Fabrice Cahez / Red fox (Vulpes vulpes) looking for a prey in a long meadow, Vosges, France, September. Pnly tail and top of head visible.

Charlie Summers / Western Black-tailed prairie dogs (Cynomys ludovicianus) four pups at burrow, captive, Prairie Wildlife Center, Colorado, USA, May

Matthias Breiter / Prairie Dog (Cynomys sp) pair, Grasslands National Park, Saskatchewan, Canada

LYNN M. STONE / Bernese Mountain dog pup in spring wildflowers (Anemone and Prairie Trillium), Elburn, Illinois, USA

LYNN M. STONE / Bernese Mountain dog pup in spring wildflowers (Anemone and Prairie Trillium), Elburn, Illinois, USA

LYNN M. STONE / Two Bernese Mountain dog pups sleeping in patch of woodland wildflowers (Anemone and Prairie Trillium), Elburn, Illinois, USA

LYNN M. STONE / Two Bernese Mountain dog pups sleeping in patch of woodland wildflowers (Anemone and Prairie Trillium), Elburn, Illinois, USA

Andrew Parkinson / Red fox (Vulpes vulpes) two cubs in a flower filled meadow, Derbyshire, UK, June.

Andrew Parkinson / Red fox (Vulpes vulpes) cub in a flower filled meadow, Derbyshire, UK, May.

Andrew Parkinson / Red fox (Vulpes vulpes) cub in a flower filled meadow, Derbyshire, UK, May.

David Welling / Utah Prairie Dog (Cynomys parvidens) standing in grass. Bryce Canyon National Park, Utah, USA, August.

David Welling / Utah Prairie Dog (Cynomys parvidens) on an asphalt road. Bryce Canyon National Park, Utah, USA, August.

David Welling / Utah Prairie Dogs (Cynomys parvidens) standing on watch outside their burrow. Bryce Canyon National Park, Utah, USA, August.

David Welling / Utah Prairie Dog (Cynomys parvidens) by the entrance to their burrow. Bryce Canyon National Park, Utah, USA, August.

Marie Read / Black-tailed Prairie Dog (Cynomys ludovicianus), young animal feeding amid a carpet of yellow sneezeweed flowers, Wichita Mountains National Wildlife Refuge, Oklahoma, USA

Marie Read / Black-tailed Prairie Dogs (Cynomys ludovicianus), two pups (right) seem to be kissing their parent. The behaviour is a gesture of recognition and identification among members of a social group of thes...

Marie Read / Black-tailed Prairie Dogs (Cynomys ludovicianus), family group of three (two adults on right, young on left) outside their burrow, Wichita Mountains National Wildlife Refuge, Oklahoma, USA

Marie Read / Black-tailed Prairie Dogs (Cynomys ludovicianus), two young animals feeding together, Wichita Mountains National Wildlife Refuge, Oklahoma, USA, May

Marie Read / Black-tailed Prairie Dogs (Cynomys ludovicianus), two young animals interacting, Wichita Mountains National Wildlife Refuge, Oklahoma, USA

Charlie Summers / Black tailed prairie dogs (Cynomys ludovicianus) one stretching on top of burrow, another peering out from burrow, Montana, USA

Charlie Summers / Black-tailed prairie dog (Cynomys ludovicianus) stretching, Montana, USA

Charlie Summers / Two Black-tailed prairie dogs (Cynomys ludovicianus) greeting near burrow, Montana, USA

Charlie Summers / Black-tailed prairie dog (Cynomys ludovicianus) giving territorial cry, Colorado, USA

Charlie Summers / Two Western Black-tailed Prairie Dogs (Cynomys ludovicianus) greeting one another entrance to burrow, with another emerging, downtown Parker, Colorado, USA

Charlie Summers / Western Black-tailed Prairie Dog (Cynomys ludovicianus) foraging in snow, Colorado, USA

Charlie Summers / Western Black-tailed Prairie Dog (Cynomys ludovicianus) stretching at entrance to burrow, with another emerging, downtown Parker, Colorado, USA

Charlie Summers / Western Black-tailed Prairie Dog (Cynomys ludovicianus) giving territorial cry, Wind Cave national Park of South Dakota

Charlie Summers / Western Black-tailed Prairie Dog (Cynomys ludovicianus) rises and gives territorial cry, from open land in downtown Parker, Colorado, USA

John Cancalosi / Two Blacktail Prairie Dogs (Cynomys ludovicianus) at entrance to underground burrows, Wyoming, USA, July

John Cancalosi / Two Blacktail Prairie Dogs (Cynomys ludovicianus) one adult, and a juvenile, engaging in a greeting 'kiss' Wyoming, USA

John Cancalosi / Blacktail Prairie Dogs (Cynomys ludovicianus) greeting one another, Wyoming, USA, July

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) sitting and feeding, Wyoming, USA, July

John Cancalosi / Three Blacktail Prairie Dogs (Cynomys ludovicianus) one adult, and two juveniles, at entrance to burrow, Wyoming, USA

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) feeding on grasses, Wyoming, USA

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) grooming itself, Wyoming, USA

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) alert on sentinel duty, Wyoming, USA, July

John Cancalosi / Three Blacktail Prairie Dogs (Cynomys ludovicianus) at the entrance to their underground burrows, Wyoming, USA

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) feeding on grass, Wyoming, USA, July

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) calling, Wyoming, USA, July

John Cancalosi / Blacktail Prairie Dog (Cynomys ludovicianus) engaging in Jump-yip behavior - A strong arch of the back or "jump" followed by a shrill "yip" - Thought to occur when a predator has left the area and in...

Shattil & Rozinski / Cowgirl with Palomino horse (Equus caballus) and ranch dog in field of Rocky Mountain Irises (Iris missouriensis) Colorado, USA, North America. June 2009. Model released

Aflo / ic-06904 Black tailed prairie dog pair greeting {Cynomys ludovicianus}

LYNN M. STONE / English Springer Spaniel sitting in prairie grass, holding training bumper (pigeon) Elkhorn, Wisconsin, USA

LYNN M. STONE / Portrait of English Springer Spaniel sitting in prairie grass, Elkhorn, Wisconsin, USA

Stephen Dalton / Red fox cub (Vulpes vulpes) in field of buttercups. UK

Ingo Arndt / Black-tailed Prairie Dog (Cynomys ludovicianus) feeding on foliage, South Dakota

Ingo Arndt / Black-tailed Prairie Dog (Cynomys ludovicianus) pair at burrow entrance, South Dakota

Ingo Arndt / Black-tailed Prairie Dog (Cynomys ludovicianus) barking from burrow entrance, South Dakota