Tony Wu / Humpback whale (Megaptera novaeangliae australis) female with suckling calf. Vava'u Islands, Tonga.

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) mother nursing calf, Newfoundland, Canada

Tony Wu / Humpback whale calf (Megaptera novaeangliae australis) female nudging her mother's mammary gland whilst trying to feed. Vava;u, Tonga, South Pacific.

Suzi Eszterhas / African Elephant (Loxodonta africana) mother and calf at waterhole, Mashatu Game Reserve, Botswana

Espen Bergersen / Aerial shot of a female Humpback whale (Megaptera novaeangliae) and calf surrounded by Killer whales (Orcinus orca), mother hits sideways with her tail fluke to drive Killer whales away, Skjervoy, Tro...

Neil Aldridge / White rhinoceros (Ceratotherium simum) mother and calf, prepare to leave a boma - a secure enclosure - in the Okavango Delta in northern Botswana after being translocated from South Africa as part of...

Eric Baccega / Female Uganda kob (Kobus kob thomasi) suckling calf. Murchisson Falls National Park, Uganda. February.

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) mother and calf, Maui, Hawaii

Franco Banfi / Sperm whale (Physeter macrocephalus) young male trying to copulate with a female. The calf of the female was in the way so the male is trying to chase it away. Dominica.

Hiroya Minakuchi / African Elephant (Loxodonta africana) mothers and calves, Amboseli National Park, Kenya

Hiroya Minakuchi / African Elephant (Loxodonta africana) herd, Amboseli National Park, Kenya

Paul Williams / Moose (Alces alces) female with twin calves, Baxter State Park, Maine, USA, June.

Richard Du Toit / Northern Giraffe (Giraffa camelopardalis) mother and calf, Itala Game Reserve, KwaZulu-Natal, South Africa

David Fleetham / Humpback whale (Megaptera novaeangliae), mother and calf swimming just below surface in front of the West Maui Mountains. South of Lahaina, West Maui, Hawaii.

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female, stationary with calf heading to surface for breath of air. Vava'u, Tonga, South Pacific.

Andrew Peacock / White Rhinoceros (Ceratotherium simum) mother and calf in grassland, Ol Pejeta Conservancy, Kenya

David Fleetham / Curious Humpback whale calf (Megaptera novaeangliae) during moment away from its mother, Hawaii.

Juergen & Christine Sohns / African Elephant (Loxodonta africana) mother browsing with calves, Addo National Park, South Africa

Juergen & Christine Sohns / African Elephant (Loxodonta africana) mother and calf, Addo National Park, South Africa

Juergen & Christine Sohns / African Elephant (Loxodonta africana) mother and calf, Addo National Park, South Africa

Franco Banfi / Sperm whale (Physeter macrocephalus) mother surfacing with calf below, Dominica, Caribbean Sea, Atlantic Ocean, Vulnerable species.

Suzi Eszterhas / Humpback Whale (Megaptera novaeangliae) mother with four day old calf, Tonga

Richard Du Toit / Northern Giraffe (Giraffa camelopardalis) mother and calf, iSimangaliso Wetland Park, South Africa

Franco Banfi / Mother with young calf Sperm whale (Physeter macrocephalus) Dominica, Caribbean Sea, Atlantic Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) female breaching together with her male calf. The calf had a large wound on his left peduncle area, one that appeared to be the result of a large bite, Vava'u,...

Neil Aldridge / White rhinoceros (Ceratotherium simum) calf keeping close to its mother on Kariega Game Reserve, South Africa.

Neil Aldridge / African elephant (Loxodonta africana) baby looking out from the safety of beneath its mother's legs, Northern Tuli Game Reserve, Botswana. Vulnerable species. The African elephant is classified as vul...

Yashpal Rathore / Asiatic elephant (Elephas maximus), herd with few days old calf crossing forest path. Jim Corbett National Park, India.

Pete Oxford / White Rhinoceros (Ceratotherium simum) mother and calf with Red-billed Oxpeckers (Buphagus erythrorhynchus), South Africa

Tony Wu / Humpback whale (Megaptera novaeangliae) calf 'Tahafa' male with injured pectoral fin and scarred body, with mother. Vava'u, Tonga, Pacific Ocean. COP26 Countdown Photo Competition 2021 Finalist.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf with his mother. Vava'u, Tonga. South Pacific.

Tony Wu / Humpback whales (Megaptera novaeangliae) in a heat run, with six males competing for the attention of a female that already has a calf. Vava'u, Kingdom of Tonga

Tony Wu / Humpback whale (Megaptera novaeangliae), fluke of female with male calf playing below, Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) calf nuzzling its mother, Vava'u, Kingdom of Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) and her calf pursued by males during heat run. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale calf (Megaptera novaeangliae) resting under the chin of its mother. Vava'u, Tonga, Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) male calf with his resting mother. Vava'u, Kingdom of Tonga. Pacific Ocean.

Tony Wu / Humpback whale (Megaptera novaeangliae) female with calf, pursued by males during heat run. Vava'u, Kingdom of Tonga. Pacific Ocean.

Andy Rouse / African Elephant (Loxodonta africana) mother and calf in rain, wallowing in mud. Maasai Mara, Kenya, Africa. September.

Denis-Huot / Masai giraffe (Giraffa camelopardalis tippelskirchi) baby standing below female, Maasai Mara Game Reserve, Kenya

Tony Wu / Grey whale (Eschrichtius robustus) calf at ocean surface, with its mother visible, Magdalena Bay, Baja California, Mexico.

Wim van den Heever / Bottlenose Dolphin (Tursiops truncates) mother and calf porpoising during annual Sardine run, Port St Johns, South Africa, June.

David Pattyn / Reticulated giraffe (Giraffa camelopardalis reticulata) young standing close to its mother, Samburu Game Reserve, Kenya, Africa, August.

Wim van den Heever / Black rhinoceros (Diceros bicornis) mother and calf having a drink at night with perfect reflections. Etosha National Park, Namibia. Taken with infrared camera.

Donald M. Jones / Elk (Cervus elaphus) bull and harem of females and calves along river, Athabasca River, western Canada

Hiroya Minakuchi / African Elephant (Loxodonta africana) mother and calf, Amboseli National Park, Kenya

Hiroya Minakuchi / African Elephant (Loxodonta africana) herd walking, Amboseli National Park, Kenya

Doug Perrine / Humpback whales (Megaptera novaeangliae) mother and calf, Kohala, Kona, Hawaii, USA.

Roland Seitre / Dromedary camel (Camelus dromedarius) calf Oriental Great Erg sand dunes, Jbil National Park, Tunisia.

Suzi Eszterhas / Indian rhinoceros (Rhinoceros unicornis) mother and calf (age 1-2 weeks) Kaziranga National Park, India.

Tony Heald / Indian rhinoceros (Rhinoceros unicornis) mother and calf, rear view. Kaziranga National Park, Assam, India. Vulnerable species

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

Loic Poidevin / Reindeer (Rangifer tarandus) calf next to mother's legs, Finland, April.

Richard Kirby / Svalbard reindeer (Rangifer tarandus platyrhynchus) mother and calves, Svalbard, Norway, February.

Roland Seitre / Dromedary (Camelus dromedarius) mother and calf in desert, Sahara Desert, Jebil National Park, Tunisia

Roland Seitre / Dromedary (Camelus dromedarius) mother and calfs in desert, Jebil National Park, Sahara Desert, Tunisia

Roland Seitre / Dromedary (Camelus dromedarius) mother and calf in desert, Jebil National Park, Sahara Desert, Tunisia

Roland Seitre / Dromedary (Camelus dromedarius) mother and calf in desert, Jebil National Park, Sahara Desert, Tunisia

Sean Crane / Reticulated Giraffe (Giraffa reticulata) mother and calf, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Sean Crane / American Bison (Bison bison) mother and calf at sunrise, Yellowstone National Park, Wyoming

ZSSD / Indian Rhinoceros (Rhinoceros unicornis) mother and calf, native to Asia

ZSSD / Indian Rhinoceros (Rhinoceros unicornis) mother and calf, native to Asia

Richard Du Toit / African Elephant (Loxodonta africana) mother and calf, Chobe National Park, Botswana

Richard Du Toit / Impala (Aepyceros melampus) mother nuzzling one month old calf, Chobe National Park, Botswana

Richard Du Toit / White Rhinoceros (Ceratotherium simum) mother and calf with Cattle Egret (Bubulcus ibis), Rietvlei Nature Reserve, South Africa

Tim Fitzharris / West Indian Manatee (Trichechus manatus) mother and calf, Crystal River, Florida

Suzi Eszterhas / Indian Rhinoceros (Rhinoceros unicornis) mother and one week old calf, Kaziranga National Park, India, digitally removed grass from foreground

Suzi Eszterhas / Indian Rhinoceros (Rhinoceros unicornis) mother grazing with one week old calf, Kaziranga National Park, India, digitally removed grass from foreground

Suzi Eszterhas / Indian Rhinoceros (Rhinoceros unicornis) mother and one week old calf, Kaziranga National Park, India, digitally removed grass from foreground

Pascal Kobeh / Female Humpback whale (Megaptera novaeangliae) with its calf in open water, Reunion Island. Indian Ocean.

Pascal Kobeh / Female humpback whale (Megaptera novaeangliae) with its very young calf at the surface, Rurutu island, Australs Archipelago, French Polynesia. Pacific Ocean.

Ammonite / Group of sub-adult African lions (Panthera leo) chasing and jumping on a mother Hippopotamus (Hippopotamus amphibius) and her calf, footage taken at night using infrared camera technology, Masai Mara,...

Jabruson Motion / THIS VIDEO CLIP WILL BE AVAILABLE TO VIEW ONLINE SOON. TO VIEW NOW, PLEASE CONTACT US. - Family of African forest elephants (Loxodonta africana cyclotis) gathered at a mineral dig, female reaching out...

Jabruson Motion / THIS VIDEO CLIP WILL BE AVAILABLE TO VIEW ONLINE SOON. TO VIEW NOW, PLEASE CONTACT US. - African forest elephant (Loxodonta africana cyclotis) calf bathing in and running through a waterhole, with mot...

Jabruson Motion / THIS VIDEO CLIP WILL BE AVAILABLE TO VIEW ONLINE SOON. TO VIEW NOW, PLEASE CONTACT US. - African forest elephant (Loxodonta africana cyclotis) calf bathing in waterhole, with mother drinking nearby, D...

Jabruson Motion / Female African forest elephant (Loxodonta africana cyclotis) and calf kneeling and drinking from mineral pool, Zanga-Ndoki National Park, Sangha-Mbaere Prefecture, Central African Republic

Lou Coetzer / African elephant (Loxodonta africana) cow reassuring young calf with trunk, Chobe River, Botswana, October, Vulnerable species.

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

Richard Du Toit / Aerial photograph of Southern Right Whale (Eubalaena australis) with white calf, near Cape Agulhas, South Africa, Southern Right Western Cape Province, Indian Ocean, August

Graham Eaton,Graham Eaton / Highland cow with calf on moorland in snow above Malham, Yorkshire, winter.

ZSSD / White Rhinoceros (Ceratotherium simum) mother grazing with calf, native to Africa

Jabruson,Jabruson / African Forest Elephant (Loxodonta africana cyclotis) mother playing with her calf. Dzanga Bai, Dzanga-Ndoki National Park, Central African Republic.

Igor Shpilenok / European Bison (Bison bonasus) calf and mother portrait. 'Mefody', first calf born to reintroduced herd in Bryansk Forest. Bryansk Forest Zapovednik, Kamchatka, Russian Far East, May.

Uri Golman / White rhinoceros (Ceratotherium simum) mother and calf browsing. Entabeni Safari Conservancy, Limpopo region, Waterberg, South Africa, October

Doc White / Humpback Whale (Megaptera novaeangliae) mother and calf. Tonga, South Pacific, September.

Doc White / Humpback Whale (Megaptera novaeangliae) mother and calf at sea surface. Tonga, South Pacific, September.

Doc White / Humpback Whale (Megaptera novaeangliae) mother and calf. Tonga, South Pacific, September.

Mark Carwardine / Aerial view of Blue whale + calf {Balaenoptera musculus} Sea of Cortez, Mexico

Mark Carwardine / Melon headed whale + calf bow riding {Peponocephala electra} Maldives

Steven Kazlowski / Moose (Alces alces) cow with a newborn calf. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

George Sanker / Newborn Elk (Cervus canadensis) calf looks up to its mother, Yellowstone National Park, USA, June

Sergey Gorshkov / African elephant charging (Loxodonta africana) female with young calf, Okavango Delta, Botswana

Sergey Gorshkov / Giraffe (Giraffa camelopardalis) female bending down to calf, Okavango Delta, Botswana

Chadden Hunter / Filming on the Antarctic sea-ice at the edge of a small hole. A cameraman gets a shock when a Killer whale (Orcinus orca) mother and calf explode out of the water in front of his face. Taken on locat...