Bence Mate / Leaf cutter ant (Atta sp) female worker carrying leaf to nest, with a smaller 'minor' ant riding. The minor's job is to protect her sister from parasitic flies. Costa Rica, December. Highly Commended,...

Klein & Hubert / Kazakh eagle hunter (Berkutchi) on horseback with his Golden eagle (Aquila chrysaetos) Altai, Mongolia. Model released.

Doug Perrine / Humpback whale (Megaptera novaeangliae) calf riding on mother's head. Near Nomuka Island, Ha'apai Islands, Tonga.

Enrique Lopez-Tapia / Tourists riding Bactrian camels (Camelus bactrianus) in sand dunes, Nubra Valley. Ladakh, India, September 2018.

Yashpal Rathore / Sloth bear (Melursus ursinus) cubs riding on mothers back, Daroiji Bear Sanctuary, Karnataka, India.

Yashpal Rathore / Sloth bear (Melursus ursinus) cub riding on mothers back, Daroiji Bear Sanctuary, Karnataka, India.

Neil Aldridge / Chacma baboon (Papio ursinus) baby riding on top of its mother on the banks of the Chobe River, Chobe National Park, Botswana.

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult feeding one of two chicks riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult carrying food (damselfly) for two chicks riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult feeding chick riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Edwin Giesbers / Western lowland gorilla (Gorilla gorilla gorilla) baby resting on mother's back, captive, occurs in Central Africa. Critically endangered.

Edwin Giesbers / Western lowland gorilla (Gorilla gorilla gorilla) baby riding on mother's back, captive, occurs in Central Africa. Critically endangered.

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Kristel Richard / Headshot of two rare black Kladruber stallions, harnessed for driving, at the Great Riding festival, in Slatinany national stud, Pardubice Region, Czech Republic. June 2015.

Cheryl-Samantha Owen / Aaron Price riding his horse 'Beau' over his Ranch, Gracie Creek, Sandhills, Nebraska. Garfield County, Nebraska, USA. October 2014.

Kristel Richard / Eagle hunter mounted on Mongolian horse with his female Golden eagle (Aquila chrysaetos) at Eagle Hunters Festival, near Sagsai, Bayan-Ulgii Aymag, Mongolia. September 2014..

Gabriel Rojo / Cattle tyrant (Machetornis rixosus) perched on capibara??Hydrochoerus hydrochaeris) Ibera Marshes, Corrientes Province, Argentina

Oliver Scholey / Grizzly bear (Ursus arctos horribilis) female with cub riding on back, Katmai National Park, Alaska, USA, August.

David Noton / Cyclists riding bikes along riverside path at dawn, near Vang Vieng, Laos, March 2009.

Ingo Arndt / Grizzly Bear / Coastal Brown Bear (Ursus arctos horribilis) mother with two spring cubs, one riding on her back, Lake Clark National Park, Alaska, USA. June.

Charlie Summers / Clark's Grebe (Aechmophorus clarkii) with yawning chick riding on back, Bear River Refuge, Utah, July.

Jeff Vanuga / Guardian riding Camargue horse through water at sunrise, Camargue, Bouches du Rhone, France, May 2013.

Enrique Lopez-Tapia / Domestic Asian elephants (Elephas maximas) used for riding safaris with their keepers, Royal Chitwan National Park, Nepal.

Enrique Lopez-Tapia / Domestic Asian elephants (Elephas maximas) used for riding safaris with their keepers, Royal Chitwan National Park, Nepal.

Enrique Lopez-Tapia / Tourists riding on domestic Indian elephant (Elephas maximus) crossing Narayani River in the dawn mist during wildlife safari, Royal Chitwan National Park, Nepal.

Enrique Lopez-Tapia / Tourists riding domesticated Indian Elephant (Elephas maximas) on safari, Royal Chitwan National Park, Nepal. October 2011.

Diane McAllister / Japanese Macaque (Macaca fuscata) juvenile riding on its mother's back, along snow trail in Jigokudani, Japan.

Axel Gomille,Axel Gomille / Camel herder with Dromedary camel (Camelus dromedarius) Thar Desert, Rajasthan, India

Kristel Richard / Lady riding a black Menorquin stallion, performing the bot or walking courbette of the Doma Menorquina, during the festival Mare de Deu de Gracia, in Mahon, Menorca, Spain 2012. Tourists are trying t...

Fiona Rogers / Western lowland gorilla (Gorilla gorilla gorilla) infant 'Sopo' aged 18 months riding on his mother 'Mopambi's' back, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. D...

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female baby 'Putri' aged 2 years riding on her mother's back reaching out with curiosity. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Born...

Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, in this type of bull fighting neither horse nor bull are injured, Portugal, May 2011, model released

Carol Walker / Lusitano horse, man training stallion in dressage steps, the high leap, Royal Riding School, Lisbon, Portugal, May 2011, model released

Carol Walker / Lusitano horse, man training stallion in dressage steps, standing up on hind legs and then jumping in the air, Royal Riding School, Lisbon, Portugal, May 2011, model released

Carol Walker / Lusitano horse, man training stallion in dressage steps, the high leap, Royal Riding School, Lisbon, Portugal, May 2011. No release available.

Carol Walker / Cowboy galloping through snow, wearing thick sheepskin coat, Wyoming, USA, February 2012, model released

Kristel Richard / A traditionally dressed cowboy riding a Quarter mare, during the rodeo of the Festival de la Doma y el Folclore, Estancia Tacuaty, Misiones, Paraguay, January 2012. No release available.

Chris Gomersall / 2020VISION / Common dolphin (Delphinus delphis) bow-riding, near South Uist, Outer Hebrides, Scotland, UK, June

Chris Gomersall / 2020VISION / Common dolphins (Delphinus delphis) bow-riding, near South Uist, Outer Hebrides, Scotland, UK, June

Kristel Richard / An Indian cowboy has lost his balance from a bronc or wild paint horse during the All Indian Rodeo, at the annual Indian Crow Fair, at Crow Agency, near Billings, Montana, USA, August 2011, Sequence 3...

Chris Gomersall / 2020VISION / Passengers on observation deck of Sea Life Surveys vessel Sula Beag watching a Bottlenose dolphin (Tursiops truncatus) bow riding in the Sound of Mull, Inner Hebrides, Scotland, UK, July 2011. 2020VIS...

Michael W. Richards / Domesticated Indian elephants (Elephas maximus) being walked to forest at sunset, Pench Tiger Reserve, Madhya Pradesh, India