A stunning collection of images taken by a wildlife photographer have revealed what life is really like in the animal kingdom . From pouting penguins to nosy orangutans , Sean Crane has captured a wide range of creatures , travelling from India to Uganda and Croatia to observe them in their natural habitat . Alongside candid photographs of the animals are others of Mr Crane , whose 'day job ' , as he describes it is as an advertising executive , working alongside conservationists . In addition to travelling to every continent to capture images of exotic animals , the photographer from Connecticut also spent a year driving around the U.S. to visit those closer to home . The gallery of animal portraits below was taken in the rainforests of Indonesia , Madagascar and Borneo , home to some of the planet 's most endangered species . Also featured are squawking penguins on the Falkland Islands and regal cheetahs as they roam across conservation parks in Kenya . A bearded piglet poses for a portrait in Borneo . The species is the only native wild pig on the island and is typically found in its rainforests . A diademed sifaka hangs upside down form a tree in Madagascar , its yellow and grey fur unmissable from a distance . The species is critically endangered with very few of its kind found at one time . A red bellied lemur hugs a tree in Madagascar , its bright brown eyes opened wide for the portrait . The animal can normally be found foraging at all levels of the rainforest . A black and white ruffed lemur hugs a tree in Madagascar . The animal is easily recognised by its wide amber eyes . It is rarer than its counterpart , the red ruffed lemur , also found in the island 's rainforests . A surprised looking leaf-tailed gecko opens wide for the camera in Madagascar . It is considered the smallest species of gecko in the world with adults typically measuring between three and six inches in length . A nosy orangutan stretches out towards Mr Crane 's camera in the Tanjung Puting National Park in Indonesia . The species is threatened by rapid deforestation across South East Asia . A Black Crested Macaque bares its fangs for the camera in Tangkoko National Park , Sulawesi , Indonesia . Black crested macaques are critically endangered with an estimated 5,000 remaining in the wild . A dough-eyed deer is taken by surprise as it finds a quiet spot to rest in the Madagascan wild . As well as dense rainforest there is an abundance of wildlife in the island 's drier patches . An angry Rockhopper penguin squawks towards Mr Crane 's lens at the The Rookery on Saunders Island , one of the Falkland Islands . A lazy Juvenile Northern Elephant Seal looks woefully down the camera as it rests on washed up reeds on a beach in central California . A sad looking baby sea lion on the shores of the Galapagos Islands . The species is classed as vulnerable because it can mostly only be found on the archipelago . Looking menacingly at the photographer 's lens , a marine iguana clutches onto salty rocks for his portrait in the Galapagos Islands . Its grey and blue scales are the perfect camouflage in its dark and watery habitat . A juvenile Southern Elephant Seal takes in the view at Carcass Island on the Falkland Islands . Males weight eight to ten times what females do - the largest weight difference between sexes in the animal kingdom . A proud cheetah poses calmly for this extraordinarily close-up portrait in the Lewa Wildlife Conservancy in Kenya . The vast wildlife park is home to 10 of the species alongside rhinos , lions and birds . Mr Crane helps as a mother orangutan grooms her young in the Borneo rainforest . The photographer has travelled to all seven continents to capture exotic wildlife in its natural habitat . The advertising executive also travelled the U.S. and lived out of the back of his car to compile one gallery . Above , he strokes the head of a confident wild cheetah on the bonnet of his jeep in Kenya .
Black Crested Macaque has travelled to all of the world 's continents to capture exotic animals in their natural habitats . The photographer , who works as an advertising executive 'by day ' , has compiled stunning albums of portraits . Among the creatures featured in his work are some of the planet 's most endangered species of animals .