这只黑猩猩迷上了塞内加尔Sakoto池塘边的枝干。黑猩猩能依靠四肢在地面上快速移动，但它们更喜欢在树枝间摇荡，就连吃食睡觉都要在树上。 摄影：FRANS LANTING, NAT GEO IMAGE COLLECTION


这是一只来自赤道几内亚比奥科岛的冈比亚巨鼠。这些啮齿目动物的嗅觉极其敏锐，能嗅出雷区中的炸药。 摄影：CHRISTIAN ZIEGLER


在赞比亚的卢安瓜谷地，一只土豚乘着夜色爬出地洞。这种夜行动物凭借着长长的鼻子和铁锹般的爪子，在挖洞和觅食白蚁两项技能中表现优异。 摄影：FRANS LANTING, NAT GEO IMAGE COLLECTION


同样是来自赞比亚的卢安瓜谷地，这张特写照片的主角是一头非洲疣猪，充分展现了该物种异于常猪的特性：尖獠牙、长而扁的头和稀疏的鬃毛。这种动物适应力极强，经常通过在泥里打滚来驱赶暑热和虫子。 摄影：FRANS LANTING, NAT GEO IMAGE COLLECTION


这头非洲森林象正在加蓬卢安瓜国家公园的池塘里泡澡。 摄影：MICHAEL NICHOLS, NAT GEO IMAGE COLLECTION


新几内亚岛福贾山的一个相机陷阱为我们拍到了世界上最稀有的树袋鼠物种之一——古氏树袋鼠，而且这个小家伙非常上相。栖息地的持续丧失致使古氏树袋鼠深陷濒危泥沼。 摄影：TIM LAMAN, NAT GEO IMAGE COLLECTION


这是印度加济兰加国家公园的一头印度独角犀牛，它的头部或因争斗受了伤。虽然体型庞大，但印度独角犀牛非常灵活，跑起来也很快。据记载，它们奔跑的时速高达50公里。 摄影：STEVE WINTER, NAT GEO IMAGE COLLECTION


为了在高高的沼泽草中觅食，鬃狼逐渐演化出四条大长腿，就像巴西潘塔纳尔湿地的这只鬃狼一样。鬃狼喜欢独自猎食，并用自己的尿液标记领地。 摄影：JOEL SARTORE, NAT GEO IMAGE COLLECTION


Wild Animals Caught by Camera Trap
A northern spotted owl (Strix occidentalis caurina) flies through a redwood forest in northern California. The critically endangered species is native to old-growth cloud forests of the Canadian province of British Columbia, as well as more U.S. states including Washington and Oregon. Photograph by Michael Nichols, Nat Geo Image Collection


Spotted feeding on a drowned bison in Yellowstone National Park, the grey wolf (Canis lupus) was once almost hunted to extinction in the lower 48 U.S. states. A reintroduction effort to parts of the U.S. West in the 1990s has helped some of the population recover. Photograph by Ronan Donovan, Nat Geo Image Collection


A mule deer (Odocoileus hemionus) walks a picturesque game trail above the Buffalo Fork River near Grand Teton National Park. Indigenous to western North America, mule deer are named for their large, mule-like ears. Photograph by Charlie Hamilton James, Nat Geo Image Collection


A grizzly bear (Ursus arctos horribilis) is pictured in Wyoming. Grizzlies once lived in much of western North America and even roamed the Great Plains. Photograph by Joe Riis, Nat Geo Image Collection


Caught in the act, a grizzly reaches for fruit in the branches of an apple tree in Wyoming’s Yellowstone National Park. Despite being top predators, the mammals consume nuts, berries, and fruit as part of their diet. Photograph by Michael Nichols


A chimpanzee (Pan troglodyte) lingers on a branch over the Sakoto Pool in Senegal. Chimps are adept at moving on all fours, but like to swing from branch to branch and do most of their eating and sleeping up in the trees.< Photograph by Frans Lanting, Nat Geo Image Collection


Ruppell’s griffon vultures (Gyps rueppellii) and African white-backed vultures (Gyps africanus) devour a carcass in Serengeti National Park, Tanzania. These vultures serve important roles as recyclers in the sub-Saharan ecosystem, but are critically endangered by poaching, poisoning, and urban development. Photograph by Charlie Hamilton James, Nat Geo Image Collection


An Emin’s giant pouched rat (Cricetomys emini) is pictured on Bioko Island, Equatorial Guinea. These rodents have an exceptional sense of smell, making them surprisingly good at sniffing out TNT in abandoned landmines. Photograph by Christian Ziegler


Purely nocturnal, an aardvark (Orycteropus afer) is spotted emerging from its burrow in Luangwa Valley, Zambia. The aardvark’s physical features, including a long snout and spade-like claws, make it successful at digging and foraging for termites. Photograph by Frans Lanting, Nat Geo Image Collection


A closeup of the warthog (Phacochoerus africanus) from Luangwa Valley, Zambia, reveals features typical to the species: sharp tusks, flat heads, and sparse manes. An adaptable animal, warthogs can often be seen rolling about in the mud for relief from heat and insects. Photograph by Frans Lanting, Nat Geo Image Collection


An African forest elephant (Loxodonta africana), the largest land animal on Earth, bathes in Gabon’s Loango National Park. Elephants love spending time in the water to get away from the heat, using their trunks to spray water and protective coatings of dust over their bodies. Photograph by Michael Nichols, Nat Geo Image Collection


One of the rarest tree kangaroo species, a Goodfellow’s tree kangaroo (Dendrolagus goodfellowi) is photographed perched on a tree in New Guinea’s Foja Mountains. Habitat loss is driving this species to the brink of extinction. Photograph by Tim Laman, Nat Geo Image Collection


A camera trap captures the image of a bloodied Indian one-horned rhino (Rhinoceros unicornis) in Kaziranga National Park, India. Though massive, the rhino is surprisingly nimble and speedy when necessary––their charges have been timed at 30 miles per hour. Photograph by Steve Winter, Nat Geo Image Collection


Two Bengal tiger (Panthera tigris tigris) cubs play at a waterhole in Bandhavgarh National Park, India. Cubs leave their mothers at 18 months of age, when they’re old enough to hunt and establish dominance over their own territories. Photograph by Steve Winter, Nat Geo Image Collection


Evolved for hunting in tall marsh grass, the maned wolf (Chrysocyon brachyurus)— photographed in Pantanal, Brazil—possesses impressively long legs. Maned wolves hunt solo and use their distinctive urine to mark their territory. Photograph by Joel Sartore, Nat Geo Image Collection


A linsang (Poiana richardsonii) emerges into the night to hunt on Equatorial Guinea’s Bioko Island. These cat-like carnivores usually weigh less than two pounds. Photograph by Christian Ziegler, Nat Geo Image Collection


A baby mule deer (Odocoileus hemionus) takes a leisurely stroll at Eagle Pass, the southeastern side of Yellowstone National Park, Wyoming. Photograph by Joe Riis, Nat Geo Image Collection


A remote camera briefly captures the tail of a West African crocodile (Crocodylus suchus) as it enters its den by the murky Salamat River in Chad’s Zakouma National Park. The crocodile-rich river is also home to the larger Nile crocodile (Crocodylus niloticus). Photograph by Micahel Nichols, Nat Geo Image Collection