Jabruson Motion / Female Mountain gorilla (Gorilla beringei beringei) with juvenile walking through foliage before a silverback enters the frame and looks at the camera, Bukima, Virunga National Park, North Kivu, Democ...

Fiona Rogers / Tana mangabey (Cercocebus galeritus) adult and juvenile sitting - portrait. Tana River Forest, South eastern Kenya.

Edwin Giesbers / Sumatran tiger (Panthera tigris sumatrae), captive, native to Sumatra, Indonesia.

Edwin Giesbers / Close-up of an eye of a Sumatran tiger (Panthera tigris sumatrae), captive, native to Sumatra, Indonesia.

Edwin Giesbers / Female Jaguar (Panthera onca), captive, occurs in Southern and Central America.

Edwin Giesbers / Female Jaguar (Panthera onca), captive, occurs in Southern and Central America.

Michele Westmorland / Booby (Sula nebouxii) looking at camera underwater, Galapagos Island.

Loic Poidevin / Female Grizzly bear (Ursus arctos horribilis) in water, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Edwin Giesbers / Wide angle close-up of two European grey wolves (Canis lupus), captive, Norway, February.

Karine Aigner / Wild female adult Bobcat (Lynx rufus) looks at the camera, Texas, USA. September.

Karine Aigner / Portrait of a wild female adult Bobcat (Lynx rufus) looks at the camera, Texas, USA. September. September.

Pal Hermansen / Masai giraffe (Giraffa camelopardalis tippelskirchi), three standing with heads facing in different directions. Masai Mara National Reserve, Kenya. September.

Pal Hermansen / Masai giraffe (Giraffa camelopardalis tippelskirchi), three standing with heads facing in different directions. Masai Mara National Reserve, Kenya. September.

Jabruson Motion / Female Western gorilla (Gorilla gorilla) and infants walking towards forest, juvenile stops and looks around, Maya Nord Bai, Odzala-Kokoua National Park, Cuvette-Ouest Region, Republic of Congo, 2001.

Jabruson Motion / Male Mountain gorilla (Gorilla beringei beringei) approaches and looks at camera, Bukima, Virunga National Park, Democratic Republic of Congo, 1996.

Jabruson Motion / Close-up of a silverback Mountain gorilla (Gorilla beringei beringei) lying down, sits up and looks around, Bukima, Virunga National Park, Democratic Republic of Congo, 1996.

Alex Mustard / Grey seal (Halichoerus grypus) curious young male looks down from above. Farne Islands, Northumberland, UK, North Sea, August

Tui De Roy / Reticulated Giraffe (Giraffa camelopardalis reticulata) young standing with mother, Laikipia, Kenya. October.

Gerrit Vyn / Porcupine (Erethizon dorsatum) on tundra. North Slope, Alaska, USA. September.

Enrique Lopez-Tapia / Elderly Borona woman, with her young grandson. Ethiopia, November 2014

Mark Taylor / Bengal cats sitting on a fallen tree.

Mark Taylor / Three cute baby Lionhead bunnies in a row.

Mark Taylor / Blue merle Collie and Poodle 'Cadoodle' puppy with silver and white guinea pig, black and white baby rabbit and blue Lop rabbit. NOT AVAILABLE FOR BOOK USE

Roy Mangersnes / Arctic fox (Vulpes lagopus) searching for food near water, Spitsbergen, Svalbard, Norway, July.

Suzi Eszterhas / Mountain Gorilla (Gorilla gorilla beringei) mother holding baby twins age five months, Parc National des Volcans, Rwanda. Endangered species

Mark Taylor / Bulldog puppy with chin on paws, against white background

MYN / Andrew Snyder / Female Guianan Red Cotinga (Phoenicircus carnifex) Iwokrama, Guyana. Meetyourneighbours.net project

MYN / Andrew Snyder / Blue-lipped tree lizard (Plica umbra) Iwokrama, Guyana. Meetyourneighbours.net project

MYN / Seth Patterson / Plains Spadefoot Toad (Spea bombifrons) male portrait, Hidalgo County, Lower Rio Grande Valley, Texas, United States of America, North America, September. Meetyourneighbours.net project

MYN / JP Lawrence / Unidentified Ghost Crab Escudo de Veraguas, Panama. Meetyourneighbours.net project

MYN / JP Lawrence / Unidentified Ghost Crab Escudo de Veraguas, Panama. Meetyourneighbours.net project

MYN / JP Lawrence / Unidentified Fiddler Crab (Uca sp.) Isla Colon, Panama. Meetyourneighbours.net project

MYN / JP Lawrence / Unidentified Jumping Spider (Salticidae) Gamboa, Panama. Meetyourneighbours.net project

MYN / JP Lawrence / American Toad (Bufo americanus) Oxford, Mississippi, USA, March. Meetyourneighbours.net project

MYN / JP Lawrence / Tree frog (Scinax ruber) the Kaw Mountains, French Guiana. Meetyourneighbours.net project

MYN / JP Lawrence / South American Common Toad (Rhinella margaritifera) Kaw Mountains, French Guiana. Meetyourneighbours.net project

Edwin Giesbers / Female Persian leopard (Panthera pardus saxicolor), captive, native to the Caucasus, Turkmenistan and Afghanistan.

Edwin Giesbers / Female Persian leopard (Panthera pardus saxicolor), captive, native to the Caucasus, Turkmenistan and Afghanistan.

Edwin Giesbers / Close-up of an eye of a Sumatran tiger (Panthera tigris sumatrae), captive, native to Sumatra, Indonesia.

Edwin Giesbers / Close-up of an eye of a Sumatran tiger (Panthera tigris sumatrae), captive, native to Sumatra, Indonesia.

Edwin Giesbers / Sumatran tiger (Panthera tigris sumatrae), captive, native to Sumatra, Indonesia.

Edwin Giesbers / Female Jaguar (Panthera onca), captive, native to Southern and Central America.

Edwin Giesbers / Jaguar (Panthera onca) cub, aged five months, captive, native to Southern and Central America.

Edwin Giesbers / Jaguar (Panthera onca) cub, aged five months, captive, native to Southern and Central America.

Edwin Giesbers / Jaguar (Panthera onca) cub, aged five months, captive, native to Southern and Central America.

Edwin Giesbers / Jaguar (Panthera onca) cub, aged five months, captive, native to Southern and Central America.

Edwin Giesbers / Jaguar (Panthera onca) cub, aged five months, captive, native to Southern and Central America.

Edwin Giesbers / Red panda (Ailurus fulgens) in a tree, captive, native to the Himalayas.