A koala soaked by floodwaters sits atop a fence post to escape the deluge in the town of Stirling in the Adelaide Hills of South Australia in this picture taken September 14, 2016. (Photo by Russell Latter/Reuters)





A large crocodile attacks a wildebeest during the migration in the Masai Mara game reserve on September 12, 2016. The daring wildebeest returned after the first attempt by the crocodile and was attacked again but walked away unharmed. (Photo by Carl De Souza/AFP Photo)





Camels are displayed for sale at a livestock market, ahead of the Eid al-Adha festival, in Amman, Jordan September 11, 2016. (Photo by Muhammad Hamed/Reuters)





Birds are seen in front of a camel displayed for sale at a livestock market, ahead of the Eid al-Adha festival, in Amman, Jordan September 11, 2016. (Photo by Muhammad Hamed/Reuters)





A five-month-old baby female Bornean orangutan (Pongo pygmaeus) plays with her mother Sulli at Bioparc Fuengirola in Fuengirola, near Malaga, southern Spain, September 12, 2016. (Photo by Jon Nazca/Reuters)





A five-month-old baby female Bornean orangutan (Pongo pygmaeus) plays with her mother Sulli at Bioparc Fuengirola in Fuengirola, near Malaga, southern Spain, September 12, 2016. (Photo by Jon Nazca/Reuters)





A five-month-old baby female Bornean orangutan (Pongo pygmaeus) looks on as she is held by her mother Sulli at Bioparc Fuengirola in Fuengirola, near Malaga, southern Spain, September 12, 2016. (Photo by Jon Nazca/Reuters)





A five-month-old baby female Bornean orangutan (Pongo pygmaeus) plays with her mother Sulli at Bioparc Fuengirola in Fuengirola, near Malaga, southern Spain, September 12, 2016. (Photo by Jon Nazca/Reuters)





A captive Hawaiian crow using a stick tool to extract food from a wooden log is shown in this image released on September 14, 2016. (Photo by Courtesy Ken Bohn/Reuters/San Diego Zoo Global)





Ring-tailed lemurs eat from a moon shaped board at a zoo ahead of the traditional Chinese Mid-autumn Festival in Kunming, Yunnan province, China, September 13, 2016. (Photo by Reuters/Stringer)





A leopard walks inside its enclosure at a zoo in Tbilisi, Georgia September 15, 2016. (Photo by David Mdzinarishvili/Reuters)





Elephants walk inside their enclosure at a zoo in Tbilisi, Georgia September 15, 2016. (Photo by David Mdzinarishvili/Reuters)





A Red-eyed green frog (Agalychnis callidryases) photographed at the Montibelli private wildlife reserve, in the municipality of Ticuantepe, 15km south of Managua, on September 9, 2016. (Photo by Inti Ocon/AFP Photo)





A peacock mantis shrimp looks out from its burrow, Dumaguete, Philippines on September 10, 2016. (Photo by Ed Brown/Alamy Stock Photo)





Monkey play in the forest in the Lekki Conservation Centre in Lagos, on September 8, 2016. Traffic jams may clog the city and the beaches look like garbage dumps, but for the Lagos state government developing tourism is now a do or die matter. (Photo by Stefan Heunis/AFP Photo)





This picture taken on September 9, 2016 shows a group of pandas eating bamboo at the Chengdu Research Base of Giant Panda Breeding in China's Sichuan province. The giant panda may have been taken off the endangered species list, but the emblematic black and white bear still faces a plethora of risks including epidemics and climate change, Chinese breeding centres say. (Photo by Wang Zhao/AFP Photo)





A wild boar and her piglets arrive on a beach to cool off in sea water whilst people sunbath on September 12, 2016 in Cerbere, southwestern France. (Photo by Raymond Roig/AFP Photo)





A handout photo provided by the European Geosciences Union on September 13, 2016 shows an undated photo of a polar bear testing the strength of thin sea ice in the Arctic. Polar bears are among the animals most affected by changes in Arctic sea ice because they rely on this surface for essential activities such as hunting, traveling and breeding. A new study by University of Washington researchers, funded by NASA, finds a trend toward earlier sea ice melt in the spring and later ice growth in the autumn across all 19 polar bear populations, which can negatively impact the feeding and breeding capabilities of the bears. (Photo by Mario Hoppmann/AFP Photo/European Geosciences Union)





A whale shark accompanied by pilot fish and remora in the Azores on September 8, 2016. Humanity is driving an unprecedented extinction of marine life, with the biggest species being pushed to the brink, scientists have said. (Photo by Nuno Sa/NPL/Alamy Stock Photo)





An adult barn swallow flies into a stable to feed its young in Corwen, UK on September 14, 2016. (Photo by Richard Bowler/Shutterstock)





A lioness (L) yawns next to a male lion (R) in the Hagenbeck zoo of Hamburg, Germany, 11 September 2016. (Photo by Daniel Reinhardt/EPA)





A close up on baby panda Tian Bao (3 months old) at a press conference at the Pairi Daiza animal park in Brugelette, Belgium on September 15, 2016. Giant panda Hao Hao gave birth on June 2016. Both giant pandas Hao Hao and and Xing Hui arrived from China in February 2014. (Photo by John Thys/Belga via ZUMA Press)





A wildebeest herd is pictured on September 13, 2016 during the annual wildebeest migration in the Masai Mara game reserve. (Photo by Carl De Souza/AFP Photo)





Zebras walk towards crossing wildebeest in the Mara river during the annual wildebeest migration in the Masai Mara game reserve on September 13, 2016. (Photo by Carl De Souza/AFP Photo)





Flocks of immigrant flamingo birds are seen the waters of Nea Kios, in Naflio, Greece, 14 September 2016. Flamingos arrived at wetland of Nea Kios, for a few days of rest, during their long journey of the autumn migration to warmer places. (Photo by Bougiotis Vangelis/EPA)





Flocks of immigrant flamingo birds are seen the waters of Nea Kios, in Naflio, Greece, 14 September 2016. (Photo by Bougiotis Vangelis/EPA)





A family of meerkats posed for the camera at Basel Zoo in Switzerland on September 12, 2016. Markus Walti from Basel managed to capture five of the animals posed with their chins resting on each others' heads, piled up on top of each other in a perfectly straight line, all staring intently at him. (Photo by Markus Walti/Mercury Press)





Monkeys enjoy moon-cakes in Qingdao, China on September 14, 2016. (Photo by Yu Fangping/ZUMA Press/Splash News)