Andy Rouse / African lion (Panthera leo) female carrying young cub, Masai Mara, Kenya, Africa. Highly commended in the African Wildlife Category of the Nature's Best Photography Competition 2019.

Chase Dekker / African Lion (Panthera leo) male, Masai Mara, Kenya

Chase Dekker / African Lion (Panthera leo) cub, Masai Mara, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) wading, Amboseli National Park, Kenya

Chase Dekker / Lesser Flamingo (Phoenicopterus minor) pair fighting, Amboseli National Park, Kenya

Anup Shah / Olive Baboon (Papio anubis) male with three month old young, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) fourteen year old sub-adult male, named Fundi, making submissive facial gesture, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) forty-three year old female, named Gremlin, scratching face, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty-five year old female, named Nasa, Gombe National Park, Tanzania

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, foraging for insects in log, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty year old male, named Titan, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) seven year old juvenile male, named Siri, feeding on vines, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty-five year old female, named Tanga, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) eighteen year old male, named Sampson, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Will Burrard-Lucas / White rhino (Ceratotherium simum), portrait. Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. EDITORIAL USE ONLY. All other uses require clearance

Fabio Pupin / Ruwenzori side-striped chameleon, (Trioceros rudis), hanging from fern, Nyungwe Forest NP, Rwanda, December . Non-ex.

Andy Rouse / African Lion, (Panthera leo), female hunting, Masai Mara, Kenya, Africa,

Andy Rouse / African lion, (Panthera leo), male, Masai Mara, Kenya, Africa,

Andy Rouse / African Lion, (Panthera leo), female hunting, Masai Mara, Kenya, Africa,

Winfried Wisniewski / African Lion (Panthera leo) male, Masai Mara, Kenya

Winfried Wisniewski / African Lion (Panthera leo) males nuzzling, Masai Mara, Kenya

Mary McDonald / Adult Mountain gorilla (Gorilla beringei beringei) holding baby, Hirwa group, Volcanoes National Park, Rwanda

Will Burrard-Lucas / Young male melanistic leopard (Panthera pardus), Laikipia Wilderness Camp, Kenya. Photographed with a camera trap. EDITORIAL USE ONLY. All other uses require clearance

Jami Tarris / African Elephant (Loxodonta africana) herd on savanna, Mount Kilimanjaro, Amboseli National Park, Kenya

Eric Baccega / Shoebill stork (Balaeniceps rex) in the swamps of Mabamba, Lake Victoria, Uganda, February.

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

Eric Baccega / Chimpanzee female (Pan troglodytes schweinfurthii) sleeping in a nest built in a tree, Kibale National Park, Uganda, January.

Eric Baccega / Chimpanzee juvenile (Pan troglodytes schweinfurthii) in a tree. Kibale National Park, Uganda. January.

Eric Baccega / Chimpanzee male (Pan troglodytes schweinfurthii) sleeping on the forest floor with feet up, Kibale National Park, Uganda. January.

Eric Baccega / Mountain gorilla (Gorilla beringei) juvenile aged 2 years, hanging from branch, member of the Nyakagezi group, Mgahinga National Park, Uganda. January.

Andy Rouse / African Leopard (Panthera pardus) female walking, Masai Mara, Kenya

Andy Rouse / African Leopard (Panthera pardus) female walking, Masai Mara, Kenya

Andy Rouse / African Lion (Panthera leo) male at sunrise, Masai Mara, Kenya

Andy Rouse / African Lion (Panthera leo) cub age 2 months, Masai Mara, Kenya

Andy Rouse / African Lion (Panthera leo) cubs age 2 months playing, Masai Mara, Kenya

Denis-Huot / Lioness (Panthera leo) playing with litter, Masai-Mara Game Reserve, Kenya

Pedro Narra / Mountain Gorilla (Goriila beringei) resting, Volcanoes National Park, Virunga Mountains, Rwanda.

Anup Shah / African elephant (Loxodonta africana) near water approaching - remote camera. Masai Mara National Reserve, Kenya.

Anup Shah / Olive baboon (Papio anubis) male approaching with curiosity - remote camera. Masai Mara National Reserve, Kenya.

Anup Shah / African elephant (Loxodonta africana) close up of leag approaching - remote camera. Masai Mara National Reserve, Kenya. August 2015.

Anup Shah / Black-backed jackal approaching with curiosity - remote camera (Canis mesomelas). Masai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) at a waterhole - remote camera. Masai Mara National Reserve, Kenya.

Anup Shah / Mixed herd of Common or Plains zebra (Equus quagga burchellii) and Eastern white-bearded wildebeest (Connochaetes taurinus) - remote camera. Masai Mara National Reserve, Kenya.

Anup Shah / Vervet monkey (Cercopithecus aethiops) male scratching itself - remote camera . Masai Mara National Reserve, Kenya.

Paul Souders/ Worldfoto / African Elephant (Loxodonta africana) calf feeding, Ngorongoro Conservation Area, Tanzania

Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) flock flying, Lake Magadi, Kenya

Paul Souders/ Worldfoto / Grey Crowned Crane (Balearica regulorum) flying, Ngorongoro Conservation Area, Tanzania

Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) flock nesting on island, Lake Natron, Tanzania

Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) nesting colony, Lake Natron, Tanzania

Paul Souders/ Worldfoto / Red algae and salt formations, Lake Natron, Ol Doinyo Lengai, Tanzania

Paul Souders/ Worldfoto / Forested hills in mist, Ngong Hills, Kenya

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei), silverback and juvenile son. Volcanoes National Park. Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei), dominant silverback in forest clearing. Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) blackback, juvenile male demonstrating power. Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) blackback, juvenile male demonstrating power. Volcanoes National Park, Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) silverback sitting on boundary wall between Volcanoes National Park and a Potato crop, looking into valley. Area to be restored to forest. Rwanda.

Christophe Courteau / Mountain gorilla (Gorilla beringei beringei) female with baby, portrait. Volcanoes National Park, Rwanda.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) Tsavo Conservation Area, Kenya. Taken with a remote camera buggy / BeetleCam. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) herd with calf at waterhole, seen through adults legs. Tsavo Conservation Area, Kenya. Taken with a remote camera buggy / BeetleCam. Edit...

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) bulls males facing off against each other, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) mud bathing, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Young male melanistic leopard (Panthera pardus), Laikipia Wilderness Camp, Kenya. Photographed with a camera trap. EDITORIAL USE ONLY. All other uses require clearance

Will Burrard-Lucas / Young male melanistic leopard (Panthera pardus), Laikipia Wilderness Camp, Kenya. Photographed with a camera trap. EDITORIAL USE ONLY. All other uses require clearance

Will Burrard-Lucas / Young male melanistic leopard (Panthera pardus), Laikipia Wilderness Camp, Kenya. Photographed with a camera trap.

Anup Shah / Olive Baboon (Papio anubis) curious male investigating camera, Masai Mara, Kenya

Anup Shah / African Elephant (Loxodonta africana) herd crossing river, Masai Mara, Kenya

Anup Shah / African Elephant (Loxodonta africana) smelling, Masai Mara, Kenya

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

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

Sandesh Kadur / Blue wildebeest (Connochaetes taurinus) crossing a river, Serengeti National Park, Tanzania.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) herd, females with extremely long tusks, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) herd at water hole, female with extremely long tusks, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) matriarch with herd, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) female with extremely long tusks, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) female with extremely long tusks, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) bull with extremely long tusks, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / Black and white image of African elephant (Loxodonta africana) herd at waterhole, Tsavo Conservation Area, Kenya. Editorial use only.

Will Burrard-Lucas / African elephant (Loxodonta africana) female with very large tusks, Tsavo National Park, Kenya. Highly commended in the GDT European Wildlife Photographer of the Year Awards 2018. Editorial use only

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

Andrew Peacock / Acacia (Acacia sp) trees at sunset, northern Kenya

Mary McDonald / Mountain gorilla (Gorilla beringei beringei) female with baby age, 4 months, Volcanoes National Park, Rwanda

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) juvenile female 'Fadhila' aged 5 years and her brother 'Fifty' aged 3 years playing together.Gombe National Park, Tanzania.

Fiona Rogers / Eastern chimpanzee (Pan troglodytes schweinfurtheii) infant male 'Fifty' aged 3 years portrait.Gombe National Park, Tanzania.

Denis-Huot / Masai giraffe (Giraffa camelopardalis tippelskirchi), female and calf at sunset, with Abdim's storks in flight, Masai-Mara Game Reserve, Kenya

Luke Massey / Spotted hyenas (Crocuta crocuta) in urban setting at night, Harar, Ethiopia

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) sixteen month old baby female, named Gossamer, in tree, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) five year old juvenile female, named Fadhila, playing with her three year old brother, named Fifty, Gombe National Park, Tanzania

Jaymi Heimbuch / Yellow-billed Oxpecker (Buphagus africanus) picking parasites off of Cape Buffalo (Syncerus caffer), Masai Mara, Kenya

Jaymi Heimbuch / African Elephant (Loxodonta africana) orphaned calves with keeper, David Sheldrick Wildlife Trust, Nairobi, Kenya

Jaymi Heimbuch / African Elephant (Loxodonta africana) orphaned calf bottle fed by keeper, David Sheldrick Wildlife Trust, Nairobi, Kenya

Brian Bevan / Male Jackson's chameleon (Trioceros jacksonii) on a branch, looking around with turret eyes, UK. Captive, native to East Africa.

Five Films / Timelapse of a lightning storm at night, Murchison Falls National Park, Uganda, April 2014.

Five Films / Timelapse of a lightning storm at night, Murchison Falls National Park, Uganda, April 2014.