George Sanker / Bull Moose (Alces alces) walking along river bank at edge of forest, Grand Teton National Park, Wyoming, USA. October.

George Sanker / Bull Moose (Alces alces) standing in river feeding on aquatic plants, Grand Teton National Park, Wyoming, USA. October.

George Sanker / Bull Moose (Alces alces) standing in river feeding on aquatic plants, Grand Teton National Park, Wyoming, USA. October.

George Sanker / Bull Moose (Alces alces) standing in river feeding on aquatic plants, Grand Teton National Park, Wyoming, USA. October.

George Sanker / Grizzly bear (Ursus arctos horribilis), with unusual black colouring, walking through long grass, Yellowstone National Park, Wyoming, USA. October.

George Sanker / Two Bull Moose (Alces alces) sparring during the rut, Grand Teton National Park, Wyoming, USA. October.

George Sanker / Coyote (Canis latrans) female with three pups at entrance to den, Yellowstone National Park, Wyoming, USA. May.

George Sanker / Leopard (Panthera pardus) walking through grass, Masai Mara National Reserve, Kenya, East Africa.

George Sanker / White-tailed deer (Odocoileus virginianus) fawn, drinking at water's edge, Acadia National Park, Maine, USA. July.

George Sanker / Bull Moose (Alces alces) standing in river feeding on aquatic plants, Grand Teton National Park, Wyoming, USA. October.

George Sanker / White-tailed deer (Odocoileus virginianus) fawn, standing among wildflowers and long grass, Acadia National Park, Maine, USA. June.

George Sanker / White-tailed deer (Odocoileus virginianus) reaching up to feed on leaves, Acadia National Park, Maine, USA. June.

George Sanker / Raccoon (Procyon lotor) drinking from a beaver pond in Acadia National Park, Maine, USA. June.

Charlie Hamilton-James / Two African wild dogs (Lycaon pictus), wearing radio transmitter collars, on path, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Two Impalas (Aepyceros melampus) grazing on low hanging branches, Gorongosa national Park, Mozambique.

Charlie Hamilton-James / Two Baboons (Papio ursinus) on mud at water's edge, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Zebras (Equus quagga) being corralled into a tunnel leading into the back of a trailer for transportation to release site, part of the first Zebra release and reintroduction into the national park, Go...

Charlie Hamilton-James / Vet attending to a drip on a young Zebra (Equus quagga) being helped by park rangers, part of a species reintroduction programme, Gorongosa National Park, Mozambique. November, 2018.

Charlie Hamilton-James / Two African wild dogs (Lycaon pictus) wearing radio collars, tearing apart the head and body of a Bushbuck (Tragelaphus scriptus), Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Large flock of birds including Marabou stork (Leptoptilos crumeniferus), Yellow-billed stork (Mycteria ibis) and Great white egrets (Ardea alba) feeding on fish trapped by receding waters during the d...

Charlie Hamilton-James / Elephant (Loxodonra africana) male, juvenile, lying down in the bush after being tranquilised. The Elephant was darted from the helicopter as part of an ongoing study on the elephants of Gorongosa, wh...

Charlie Hamilton-James / Conservation workers from the Gorongosa Carnivore Project replacing a collar on a sedated male Lion (Panthera leo), with a ranger standing on the roof of car to keep watch for other Lions, Gorongosa N...

Charlie Hamilton-James / Lioness (Panthera leo) stalking flock of Pelicans (Pelecanus sp.) on the flood plain, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Lioness (Panthera leo) watching her four young cubs playing with her sub-adult daughter, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Lioness (Panthera leo) chasing flock of Pelicans (Pelecanus sp.) on the flood plain, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Elephant (Loxodonta africana) herd at edge of forest, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Team of conservationists and scientists taking blood, hair samples and measurements from a sedated female Greater kudu (Tragelaphus strepsiceros), Gorongosa National Park, Mozambique. May, 2018.

Charlie Hamilton-James / Team of conservationists and scientists taking blood, hair samples and measurements from a sedated female Greater kudu (Tragelaphus strepsiceros), Gorongosa National Park, Mozambique. May, 2018.

Charlie Hamilton-James / Team of conservationists and scientists taking measurements from a sedated female Greater kudu (Tragelaphus strepsiceros), Gorongosa National Park, Mozambique. May, 2018.

Charlie Hamilton-James / Team of conservationists and scientists taking blood, hair samples and measurements from a sedated male Greater kudu (Tragelaphus strepsiceros), Gorongosa National Park, Mozambique. May, 2018.

Charlie Hamilton-James / Lioness (Panthera leo) walking through forest at dawn, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Conservationists and scientists attaching radio collar on a female, tuskless Elephant (Loxodonta africana) as part of a study about the evolution of tuskless elephants, Gorongosa National Park, Mozamb...

Charlie Hamilton-James / Conservationists and scientists attaching radio collar on a female, tuskless Elephant (Loxodonta africana) as part of a study about the evolution of tuskless elephants, Gorongosa National Park, Mozamb...

Charlie Hamilton-James / Aerial view of man in helicopter with tranquiliser gun aiming at herd of fleeing Elephants (Loxodonta africana), Gorongosa National Park, Mozambique. November, 2018.

Charlie Hamilton-James / Elephant (Loxodonta africana) herd, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / African wild dog (Lycaon pictus) pack on open ground at sunset, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Lioness (Panthera leo) lying down, snarling at male Lion, with pack of African wild dogs (Lycaon pictus) in background, Gorongosa National Park, Moxambique.

Charlie Hamilton-James / African wild dog (Lycaon pictus) pack walking across plain at dawn, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Baboon (Papio ursinus) carrying animal carcass in its mouth, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Impala (Aepyceros melampus) herd feeding around a termite mound, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Two Lions (Panthera leo) female, juvenile, resting on the construction site of a new picnic area, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Bull Elephant (Loxodonta africana) reaching up to feed from a tree at dusk, Gorongosa National Park, Mozambique.

Charlie Hamilton-James / Pronghorn antelope (Antilocapra americana) juvenile, carcass caught in wire fence, Casper, Wyoming, USA.

Charlie Hamilton-James / American badger (Taxidea taxus) walking along trail through Sagebrush (Artemisia sp.) near Big Piney, Wyoming, USA. June. Camera trap image.

Charlie Hamilton-James / Prairie dog (Cynomys sp.) standing alert, Jonahs gas field, Wyoming, USA. April.

Charlie Hamilton-James / Group of Pronghorn antelopes (Antilocapra americana) grazing and resting in Sagebrush (Artemisia sp.) with industrial buildings in background, Jonas Gas Field, near Pinedale, Wyoming, USA. April.

Andy Rouse / African lion (Panthera leo), male, walking at sunrise. Amboseli National Park, Kenya.

Andy Rouse / RF - African lioness (Panthera leo) portrait. Lumo Wildlife Sanctuary, Tsavo National Park, Kenya. (This image may be licensed either as rights managed or royalty free.)

David Pattyn / Alpine ibex (Capra ibex) male, with kid on mountain ridge in heavy winter snowfall, Valsavarenche, Gran Paradiso National Park, Italy. January. BioPhoto International Nature Photography Competition 2...

Charlie Hamilton-James / Dead Brown rat (Rattus norvegicus) on weighing scales, research for a Rat pheromone project by Fordham University, Brooklyn New York City, USA.

Charlie Hamilton-James / Scientist with Brown rat (Rattus norvegicus) in glass tank working on a rat pheromone project, Brooklyn, New York City, USA. May, 2018.

Charlie Hamilton-James / Three Brown rats (Rattus Ratus) on the sidewalk at night, West Broadway, New York City, USA. May.

Charlie Hamilton-James / Black rat (Rattus rattus) sitting outside entrance to temple with queue of visitors watching in background, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni...

Charlie Hamilton-James / Black rats (Rattus rattus) feeding on food and fruit left out for them inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over iron gate inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats that l...

Charlie Hamilton-James / Brown rat (Rattus norvegicus) with its head down a hole in city street at night, Tribeca, New York City, USA. May.

Charlie Hamilton-James / Ratcatchers holding dead adult male Brown rat (Rattus norvegicus), Manhatten, New York City, USA. May, 2018.

Charlie Hamilton-James / Dead Brown rat (Rattus norvegicus) caught in ratcatchers trap, Manhatten, New York City, USA. May.

Charlie Hamilton-James / Woman standing in temple surrounded by Black rats (Rattus rattus) feeding on food left for them, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and fa...

Charlie Hamilton-James / Black rats (Rattus rattus) surrounding bowl of food left out for them, with group of women walking past, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mat...

Charlie Hamilton-James / Black rats (Rattus rattus) feeding on steps inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats that live and...

Charlie Hamilton-James / Black rats (Rattus rattus) drinking from bowl of water and swarming over steps inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for th...

Charlie Hamilton-James / Black rats (Rattus rattus) feeding with group of visitors watching in background inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for...

Charlie Hamilton-James / Black rats (Rattus rattus) foraging with two women in background inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of bla...

Charlie Hamilton-James / Black rats (Rattus rattus) swarming over drinking bowls inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats t...

Charlie Hamilton-James / Black rat (Rattus rattus) resting on iron railing, high up inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rat...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over iron gate with two women watching inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousa...

Charlie Hamilton-James / Two Black rats (Rattus rattus) climbing over iron gate with group of people watching inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous...

Charlie Hamilton-James / Black rats (Rattus rattus) feeding and climbing into drain in wall with man walking past, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous fo...

Charlie Hamilton-James / Man and boy sitting on ground taking photograph with mobile phone surrounded by Black rats (Rattus rattus) feeding, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddes...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over iron railings inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats th...

Charlie Hamilton-James / Black rat (Rattus rattus) resting on iron railings inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats that l...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over vegetables in crate with two men sitting on floor preparing food, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni M...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over crates of produce with three men sitting on floor preparing food, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni M...

Charlie Hamilton-James / Black rats (Rattus rattus) climbing over iron gate inside Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats that l...

Charlie Hamilton-James / Pest control worker holding bundle of dead Brown rats (Rattus norvegicus) in city alley at night, Washington DC, USA. June, 2018.

Charlie Hamilton-James / Two female pest control workers laying out dead Brown rats (Rattus norvegicus) on ground in city alley at night, Washington DC, USA. June, 2018.

Charlie Hamilton-James / Two Patterdale terriers, one with dead Brown rat (Rattus norvegicus) in mouth, part of pest control team ratting in city at night, Washington DC, USA. June.

Charlie Hamilton-James / Brown rat (Rattus norvegicus) poking head out of a drain on city street at night, just off Broadway, New York City, USA. May.

Charlie Hamilton-James / Brown rats (Rattus norvegicus) running between their home, under a tree, and rubbish bags, looking for food at night, Pearl St, New York City, USA. May.

Charlie Hamilton-James / Three Brown rats (Rattus norvegicus) climbing over rubbish bin foraging for food at night, Tribeca, New York City, USA. September.

Charlie Hamilton-James / Man walking through temple with Black rats (Rattus rattus) feeding on food left for them, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous fo...

Charlie Hamilton-James / Woman carrying plate of food, walking through temple with Black rats (Rattus rattus) feeding on food left for them, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddes...

Charlie Hamilton-James / Brown rats (Rattus norvegicus) on city sidewalk at night, West Broadway, New York City, USA. May.

Charlie Hamilton-James / Brown rats (Rattus norvegicus) on city sidewalk at night, Pearl Street, New York City, USA. May.

Charlie Hamilton-James / Brown rats in a catch basin / drain under city street at night, West Broadway, New York City, USA. March.

Charlie Hamilton-James / Woman stroking Black rat (Rattus rattus) which is drinking from large bowl in the Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousa...

Charlie Hamilton-James / Group of Black rats (Rattus rattus) huddled together sleeping inside temple, with group of women waiting in line in background, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the...

Charlie Hamilton-James / Group of Black rats (Rattus rattus) in temple with two standing on hind legs, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands...

Charlie Hamilton-James / Group of Black rats (Rattus rattus) in temple, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats that live and are...

Charlie Hamilton-James / Group of Black rats (Rattus rattus) drinking milk from large bowl in temple, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands...

Charlie Hamilton-James / Man spreading food for Black rats (Rattus rattus) on steps in the Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rat...

Charlie Hamilton-James / Two men walking through temple surrounded by Black rats (Rattus rattus), Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of bl...

Charlie Hamilton-James / Black rat (Rattus rattus) resting on stone slab next to food left by visitors, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands...

Charlie Hamilton-James / Two Black rats (Rattus rattus) standing on hind legs, fighting, Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands of black rats...

Charlie Hamilton-James / Man looking at two Black rats (Rattus rattus) climbing over iron gate in the Karni Mata Temple (The Temple of Rats), a Hindu temple dedicated to the Hindu Goddess Karni Mata and famous for thousands o...