John Cancalosi / Feral Burro / Donkey foal (Equus asinus) head portrait lying in long grass, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey (Equus asinus) female and foal, portrait standing in long grass, Custer State Park, South Dakota, USA

Doug Wechsler / Black water stream in rainforest Burro Burro River, Guyana, South America

Doug Wechsler / Black water stream in rainforest, Burro Burro River, Guyana, South America

Tom Vezo / Donkey (Equus asinus), Gammons Gulch, Arizona

Carol Walker / Burro (Equus asinus), Dreamcatcher Horse and Burro Sanctuary, California, USA

Carol Walker / Burro (Equus asinus), Dreamcatcher Horse and Burro Sanctuary, California, USA

Carol Walker / Burro (Equus asinus), Dreamcatcher Sanctuary, California, USA

Carol Walker / Mustangs / Wild Horses, herd running, Dreamcatcher Horse and Burro Sanctuary, California, USA

Konrad Wothe / Donkey (Equus asinus) mother grazing with foal in orchard, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) mother with foal in meadow, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) mother with foal in orchard, Bavaria, Germany

John Cancalosi / Feral Burro / Donkey (Equus asinus) portrait, Custer State Park, South Dakota, USA

John Cancalosi / Burro / Feral Donkey (Equus asinus) braying, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey foal (Equus asinus) standing in long grass, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey foal (Equus asinus) standing in long grass, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey (Equus asinus) female and foal, portrait standing in long grass, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey foal (Equus asinus) portrait standing in long grass, Custer State Park, South Dakota, USA

John Cancalosi / Feral Burro / Donkey (Equus asinus) head portrait, Custer State Park, South Dakota, USA

Floris van Breugel / Wild Burro (Equus asinus) portrait standing in a remote canyon in Panamint Valley, Death Valley National Park, California, USA. December 2009.

LYNN M. STONE / Wild donkey / Burro {Equus asinus} in desert, Arizona, USA

Michael & Patricia Fogden / Kuiseb River on a rare day when it flows showing donkeys arriving to drink, Namib Desert, Namibia

Michael & Patricia Fogden / Kuiseb River on a rare day when it flows showing donkeys arriving to drink, Namib Desert, Namibia

Albert Lleal / Donkey (Equus asinus) foraging among garbage strewn streets of Ouahigouya, Burkina Faso, west Africa

Luciano Candisani / Donkey (Equus asinus) portrait, Rondonia, Brazil

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) pair of males running, Serranias del Burro, Coahuila, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) posse of males running, Serranias del Burro, Coahuila, Mexico

Patricio Robles Gil / Striking cliffs in Serranias del Burro region, Coahuila state, Mexico

Patricio Robles Gil / Grasslands and Oak woodlands in Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) posse of males, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) female running, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) three males displaying, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) male in perching in tree, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) male flying, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) male flying, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) female running, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) two males displaying, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) male in forest, Serranias del Burro, Coahuila state, Mexico

Patricio Robles Gil / Wild Turkey (Meleagris gallopavo) male displaying to female, Serranias del Burro, Coahuila state, Mexico

Doug Wechsler / Male Harlequin beetle (Acrocinus longimanus) Burro Burro river, Guyana

Doug Wechsler / Close up of male Harleguin beetle (Acrocinus longimanus) Burro Burro river, Guyana

Konrad Wothe / Donkey (Equus asinus) adult with foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) adult with foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) adult with foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) adult with foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) foal running through field, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) adult with foal, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) foal resting, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) two foals communicating, Bavaria, Germany

Tui De Roy / Feral Donkey (Equus asinus) grazing on shrubs, San Benito Island, Baja California, Mexico

Doug Wechsler / Juvenile Cook's tree boa flicking tongue {Corallus enhydris} Burro Burro, Guyana

Duncan Usher / Donkey (Equus asinus) colt running through field, Europe

Duncan Usher / Donkey (Equus asinus) female with colt, Europe

Tui De Roy / Feral Donkey (Equus asinus) in small family herds compete with Galapagos Tortoise for food and trample nesting areas, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Konrad Wothe / Donkey (Equus asinus) foal resting in field of flowers, Germany

Konrad Wothe / Donkey (Equus asinus) foal in field of flowers, Germany

Patricio Robles Gil / Serranias del Burro landscape, Coahuila, Mexico

Patricio Robles Gil / Turkey vulture sunning {Cathartes aura} Serranius del Burro, Coahuila, Mexico

LYNN M. STONE / Wild burro {Equus asinus} Arizona / Nevada, USA

LYNN M. STONE / Wild burro {Equus asinus} Arizona/Nevada, USA, North America

Sebastian Kennerknecht / Donkey (Equus asinus), feral individual, on mountain side, Hawf Protected Area, Yemen

Konrad Wothe / Donkey (Equus asinus) foal grazing, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) mother grazing with foal in meadow, Bavaria, Germany

Konrad Wothe / Donkey (Equus asinus) mother grazing with foal in orchard, Bavaria, Germany

Tui De Roy / Feral Donkey (Equus asinus) pair in overgrazed pasture, San Benito Island, Baja California, Mexico

Tui De Roy / Feral Donkey (Equus asinus) pair on overgrazed pasture, San Benito Island, Baja California, Mexico

Doug Wechsler / Adult male Harlequin beetle {Acrocinus longimanus} Burro Burro River Guyana

Mark Moffett / Donkey (Equus asinus) carrying two children between Sirjan and Kerman, Iran

LYNN M. STONE / Wild burro {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burros {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro {Equus asinus} Nevada USA

LYNN M. STONE / Wild burro {Equus asinus} Nevada USA

LYNN M. STONE / Wild burro foal {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro group {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro group {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro foal resting {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro juvenile feeding on sage {Equus asinus} Arizona/Nevada USA

LYNN M. STONE / Wild burro foal resting {Equus asinus} Arizona/Nevada USA