Loic Poidevin / Grizzly bear (Ursus arctos horribilis) mother and cub in river, Katmai National Park, Alaska, USA, August

Suzi Eszterhas / Brown Bear (Ursus arctos) mother and 3-4 month cubs foraging for clams, Katmai National Park, Alaska, USA. June.

Tony Heald / Asian elephant (Elephas maximus) mother and baby domesticated elephants in water, Bandhavgarh National Park, India. March.

Cyril Ruoso / Sumatran orangutan (Pongo abelii) female holding hands with baby whilst hanging from liana. Gunung Leuser National Park, Sumatra, Indonesia.

Yukihiro Fukuda / Japanese macaque (Macaca fuscata fuscata) mother with rare white furred baby, Jigokudani Valley, Nagano Prefecture, Japan. June.

Nick Upton / Mute swan (Cygnus olor) female and a young cygnet foraging in sunset light, Kennet and Avon canal, Caen Hill, Wiltshire, UK, June.

Theo Webb / Female Bonobo (Pan paniscus) resting with her infant, Max Planck research site LuiKotale in Salonga National Park, Democratic Republic of Congo.

Hermann Brehm / Crowned crane (Balearica regulorum) with chicks, Ndutu, Tanzania.

Hermann Brehm / Crowned crane (Balearica regulorum) with chicks, Ndutu, Tanzania.

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant female 'Safi' aged 2 years with female 'Nasa' aged 23 years. Gombe National Park, Tanzania.

Pedro Narra / Bottlenose Dolphin (Tursiops truncatus) family swimming near the surface, Sado Estuary, Portugal

Carol Walker / Trainer Rich Scott with Cremosso, a young male cremello Wild horse / mustang that had been rounded up from a McCullough Peak herd and put up for adoption, trainer teaching it to be led in paddock, Jul...

Diane McAllister / Female Rocky Mountain bighorn sheep ewe (Ovis canadensis canadensis) warning her newborn lamb that a rocky ledge is too close and dangerous. She places her front hoof on the baby's back, stopping it f...

Laurent Geslin / Alpine newt (Triturus alpestris) swimming in garden pond, viewed from below, with woman and child watching. Switzerland, April 2010. Model released

Christophe Courteau / Kalahari bushmen, Qhaikgao (right) teaching Xamse (left) how to hunt with a bow and arrow, Central Kalahari Desert, Botswana, August 2008

Laurent Geslin / Alpine newt (Triturus alpestris) breathing at the surface of a garden pond, with mother and child observing, viewed from underwater, Switzerland. April 2010.

Jeff Rotman / Dolphin trainer interacting with Bottlenose Dolphin (Tursiops truncatus), Dolphin Reef, Eilat, Israel - Red Sea. Model released.

Jeff Rotman / Bottlenose Dolphin (Tursiops truncatus) painting with paintbrush, dolphin trainer holds the artwork, Dolphin Reef, Eilat, Israel, Red Sea.

Christophe Courteau / Conservation & natural history lesson in classroom. Kanare Village, Sahel, Niger, Africa.

Anup Shah / Female Chimpanzee 'Gremlin' demonstrates to offspring how to use a stem as a tool to remove termites from a termite mound {Pan troglodytes schweinfurtheii} Kasekela community, Gombe NP, Tanzania. 2002

Suzi Eszterhas / American Bison (Bison bison) cow and calf playing, Yellowstone National Park, Montana

Gerry Ellis / Chimpanzee (Pan troglodytes) teaching young male to use fishing tool, Washington Park Zoo

Gerry Ellis / Chimpanzee (Pan troglodytes) teaching, young male to use fishing tool, Washington Park Zoo

Shane Gross / The Nature Conservancy scientist Bo Lusk teaching volunteer how to collect Eelgrass (Zostera marina) seeds for seagrass restoration project. Project led by Virginia Institute of Marine Science, Virgin...

David Fleetham / Scuba diving instructor Anthony Manion on his way to the ocean with four students in front of the Grand Wailea Hotel on Maui, Hawaii. July 2019. Model released.

David Fleetham / SCUBA diving instructor Anthony Manion practices skills with four students in a hotel pool on Maui, Hawaii. July 2019. Model released.

David Fleetham / Scuba diving instructor Anthony Manion practices skills with four students in a hotel pool on Maui, Hawaii. July 2019. Model released.

Sergio Hanquet / Divers learning to freedive with sled, more divers at surface. Tenerife, Canary Islands. 2015.

Magnus Lundgren / Wild Wonders of China / Joe Cheung, Ocean Park Conservation Foundation Hong Kong , teaching secondary school students about Chinese horseshoe crab (Tachypleus tridentatus) Yuen Long District facing DHa Pak Nai, Yuen Long, Ho...

Magnus Lundgren / Wild Wonders of China / Central Yunnan black crested gibbon (Nomascus concolor jingdongensis), mother and baby swinging in canopy. Wuliangshan Nature Reserve, Jingdong, Yunnan Province, China.

Karine Aigner / Park ranger Niki Lake poses as 'Batty the Clown', teaching child to do the 'Bat handshake', in San Antonio where a bachelor colony of Mexican free-tailed bats (Tadarida brasiliensis) live under the...

Karine Aigner / Director of Bat Conservation International's Bracken Cave Preserve standing at the mouth of Bracken Cave, holding one of his teaching placards, Bracken Cave, San Antonio, Texas, USA, July 2015.

Phil Savoie / Adult Barn swallow (Hirundo rustica) teaching fledglings how to hunt from post, Monmouthshire Wales, UK

Phil Savoie / American swallow (Hirundo rustica erythrogaster) in flight with fledgling following, Yellowstone National Park, Montana, USA, July.

Kristel Richard / Puma (puma concolor) teaching her 7-month male and female cubs how to hunt, Torres del Paine National Park, Chile, Latin America.

Peter Stevick / Hebridean Whale and Dolphin Trust survey and teaching boat 'Silurian' under sail off the coast of St Kilda, Outer Hebrides, Scotland, UK. July 2006.

Children studying whale tooth in the floating classroom aboard the Hebridean Whale and Dolphin Trust survey and teaching boat 'Silurian' Port Ellen, Islay, Inner Hebrides, Scotland, UK, April 2016.

HWDT Crew / Hebridean Whale and Dolphin Trust survey and teaching boat 'Silurian' Scotland, UK, July 2016.

Wild Shots Outreach / Mike Kendrick teaching student Shawn Molea during residential photography course organised by Wild Shots Outreach. Kruger National Park, South Africa, June 2017.

Jen Guyton / Meerkat pup (Suricata suricatta) eating a gecko as its adult family members look on in the Kalahari Desert, South Africa. Small repro only.

LYNN M. STONE / RF - Texas longhorn cow nursing calf on hill country ranch land. Santa Barbara County, California, USA. (This image may be licensed either as rights managed or royalty free.)

Denis-Huot / Female Cheetah (Acinonyx jubatus) watching her cub hunting a Thomson's gazelle calf (Eudorcas thomsonii), Masai Mara Game Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) cubs aged 6-9 months hunting Thomson's gazelle (Eudorcas thomsonii) fawn caught by their mother, to help develop hunting skills, Maasai Mara National Reserve, Kenya.