Martin Dohrn / Group of lions (Panthera leo) at night, Masai Mara, Kenya. Photographed using 'Starlight Camera' technology without artificial lighting.

Andy Rouse / African lioness (Panthera leo) resting with head on another at sunrise, Masai Mara National Reserve, Kenya

Andy Rouse / Masai Giraffes (Giraffa camelopardalis tippelskirchi) seen from a low angle. Masai Mara, Kenya, Africa.

Anup Shah / African elephant herd (Loxodonta africana) spraying mud with trunk, Masai Mara National Reserve, Kenya. December

Anup Shah / Southern / Masai giraffe (Giraffa camelopardalis tippelskirchi) feeding on tree while Plains / Common zebra passes by (Equus quagga burchellii). Masai Mara National Reserve, Kenya. March.

Anup Shah / Olive baboons (Papio cynocephalus anubis) grooming one another, with baby sitting alongside adults. Masai Mara National Reserve, Kenya. March.

Anup Shah / Olive baboon (Papio cynocephalus anubis) grooming a male baby aged 3-6 months Masai Mara National Reserve, Kenya. March.

Martin Dohrn / Lions (Panthera leo) approaching rhinoceros, Masai Mara, Kenya. Photographed at night using 'Starlight Camera' technology without artificial lighting.

Martin Dohrn / Pride of lions (Panthera leo) in Masai Mara, Kenya. Photographed at night using 'Starlight Camera' technology without artificial lighting.

Inaki Relanzon / Family of African elephants (Loxodonta africana), Masai Mara National Reserve, Kenya, Africa.

George Sanker / African lion (Panthera leo) male and female at sunrise, Masai Mara National Reserve, Kenya, January

George Sanker / Male African lion (Panthera leo) lying in grass at sunrise, Masai Mara National Reserve, Kenya, January

Andy Rouse / Common wildebeest (Connochaetes taurinus) crossing river on migration in rain, Masai Mara, Kenya, Africa

Andy Rouse / Nile crocodile (Crocodylus niloticus) chasing Wildebeest (Connochaetes taurinus) during migration crossing, Masai Mara, Kenya, Africa

SIMON KING / Cheetah portrait, Masia Mara, Kenya

Anup Shah / Lion cubs grooming each other, Kenya

Anup Shah / Lions attacking Hippopotamus, Masia Mara, Kenya

Mike Wilkes / Yellow throated longclaw {Macronyx croceus} singing, Masia Mara, Kenya

Peter Blackwell / Lion cub at sunset (Panthera leo) Masia Mara GR, Kenya

Nigel Tucker / Lion {Panthera leo} female grooming juvenile, Masia Mara, Kenya, East Africa.

Charlie Hamilton-James / Four Maasai cattle herders walking towards their herd in rain, Okiombo, Masia Mara, Kenya, Africa. November, 2015.

Charlie Hamilton-James / Four Maasai cattle herders with their herd in rain, Okiombo, Masia Mara, Kenya, Africa. November, 2015.

Charlie Hamilton-James / Masia cattle herder with herd, Okiombo, Masai Mara, Kenya, Africa. November, 2015.