A gaucho of the Estancia Bonanza with his horse and the Mount Fitz Roy in background, El Chalten, Argentina. (MR)

A gaucho of Estancia Bonanza on horseback with the Fitz Roy Mountain in the background, El Chalten, Argentina. (MR)

Herd of rodeo horses running through meadow in winter, Kalispell, Montana.

USA, Oregon, Deschutes County, Central Oregon,Cascade Mountains, Sisters,

Mongolian eagle hunter, three Kazakhs on horseback with trained eagles, Bajan-Olgii province, Mongolia, Asia

Mongolian Eagle hunter, Bayan-Olgii province, Mongolia, Asia

Horses grazing on a pasture on foggy morning, Vysoka Lipa, Jetrichovice, Okres Decin, Ustecky kraj Province, Bohemian Switzerland National Park, North-Western Czech Republic, Czech Republic

China, Inner Mongolia, Hebei Province, Zhangjiakou, Bashang Grassland, Mongolians traditionnaly dressed with horses running in a group in the water

China, Inner Mongolia, Hebei Province, Zhangjiakou, Bashang Grassland, Mongolian horsemen lead a troop of horses running in a group in the meadow

China, Inner Mongolia, Hebei Province, Zhangjiakou, Bashang Grassland, Mongolian horsemen lead a troop of horses running in a group in the meadow

Europe, France, Provence-Alpes-Cote d'Azur, Bouches-du-Rhone, Camargue, Saintes-Maries-de-la-Mer, white horses run through the marshes of the Camargue

France, Corse du Sud, Alta Rocca, plateau of Cuscione, horse riding on the plateau around the Castellu d'Ornucciu with Justine Tauvel professor of the equestrian center, passage to the Canoso pass and...

White Wild Horses of Camargue running on water, Aigues Mortes, Southern France

Usa, Wyoming, Shell, The Hideout Ranch, Cowboy and Lasso Silhouette at Sunset (MR, PR)

Cowboy riding his horse in winter, Hideout Ranch, Shell, Wyoming. (MR, PR)

Friesian galloping, summer, Austria, Europe

3 Horsemen, Feira de Cordoba, Cordoba, Andalucia, Spain

White icelandic horse, Snaefellsness peninsula, Iceland

Hanoverian horse, Sorrel, brown, reddish fur, galloping in the snow, Tyrol, Austria, Europe

Arabian horse, mare galloping in deep snow, Tyrol, Austria, Europe

USA, Wyoming, Shell, Horses in the Cold (PR)

France, Provence, Camargue, A guardian and white Camargue horses reflected in a calm lake

Poland, Lesser Poland Voivodeship, Cracow, Main Market Square, Horse Carriage with St. Mary Basilica in the background

United States, South Dakota, Belle Fourche, ranch of Todd Larsen, sorting and branding the cattle

United States, Arizona, Window Rock, Festival Navajo Nation Fair, rodeo

The Kelpies are 30-metre high horse-head sculptures, standing next to a new extension to the Forth and Clyde Canal, and near River Carron, in The Helix, Scotland

Icelandic Horses, (Equus ferus caballus) at Hali farm, Southern Iceland

Icelandic Horse with typical winter coat. Traditional Icelandic breed traces its origin back to the horses of the Viking settlers during the middle ages.

Gardian, cowboy & horseman of the Camargue with running white horses, Camargue, France

Wild horses rounded up in the crowded arena during the Rapa das Bestas (Shearing of the Beasts) festival at Sabucedo, Galicia, Spain

Cowboys riding across grassland with moutains behind, early morning, British Columbia, B.C., Canada

Cowboys & horses in silhouette at dawn on ranch, British Columbia, Canada

Cowboys & cowgirls galloping horses across grassland British Columbia, Canada

Cowboys on horses, sunrise, British Columbia, Canada

Chile, Easter Island (Rapa Nui), site listed as World Heritage by UNESCO, Ahu Tongariki, wild horses in front of the Moai statues

White horses of Camargue running in the Mediterranean water at sunrise

The replica of Horses of Saint Mark known as the Triumphal Quadriga located above the porch of St Mark's Basilica, Venice, Veneto, Italy

Camargue white horses galloping through water, Camargue, France

Camargue white horses galloping through water, Camargue, France

Horseman during the Barrete Verde (Green Cap) festivities. Alcochete, Portugal

Europe, France, Provence. Seven white Camargue horses running in water.

Pair of Camargue horse stallions, southern France

Spain, Castille & Leon, Avila, San Bartolome de Pinares, Men and horses jumping through fire on the eve of the feast of San Antonio, as a tradition to purify the animals.

Spain, Castille & Leon, Avila, San Bartolome de Pinares, Men and horses jumping through fire on the eve of the feast of San Antonio, as a tradition to purify the animals.

Italy, Tuscany, Siena district, Siena, Piazza del Campo. The Palio.

Rocio Pilgrimage nr El Rocio, Andalucia, Spain

Australia, Queensland, Mareeba. Saddle bronc rider in action at the Mareeba Rodeo.

National Horse Fair. Golega, Portugal

An indigenous Kazakh herder stands with his horse on Wulun Guhu Lake in Xinjiang, China

Close-up of a horse's eye, Lapland, Finland

USA, Oregon, Ponderosa Ranch. A cowboy with his horse at sunset

Calgary Canada, Rodeo events at the Calgary Stampede

Lusitano portuguese horses. A pure breed of Portugal

Horseman dressed with the traditional costume used to work with wild bulls. Alcochete, Portugal

Kenya, Chyulu Hills, Ol Donyo Wuas. Couple on a horse riding safari with Ride Africa in the Chyulu Hills (MR)

France, Provence. White Camargue horses running through water

USA, Oregon, Seneca, Ponderosa Ranch, Cowboy and horses running PR (MR)