• 幻灯片 37 - 1: A fennec (or fennec fox) sleeps in his enclosure at the Biotropica Zoo in Val-de-Reuil on August 28, 2018. (Photo by CHARLY TRIBALLEAU / AFP) (Photo credit should read CHARLY TRIBALLEAU/AFP/Getty Images)
  • 幻灯片 37 - 2: MELBOURNE, AUSTRALIA - JUNE 5: A koala sleeping on a tree branch in Melbourne, Australia on June 5, 2017. Climate change, rising sea levels put Australia's koalas at risk, scientists said at a scientific conference. (Photo by Recep Sakar/Anadolu Agency/Getty Images)
  • 幻灯片 37 - 3: A young gorilla sleeps with its mother inside their enclosure at the Zooparc de Beauval in Saint-Aignan, central France, on April 14, 2017. / AFP PHOTO / GUILLAUME SOUVANT (Photo credit should read GUILLAUME SOUVANT/AFP/Getty Images)
  • 幻灯片 37 - 4: *** EXCLUSIVE - VIDEO AVAILABLE *** ORANGE COUNTY, CA - 2016: Barclay and Rudy snuggle up for a nap in the living room in Orange County, California, 2016. A feisty duck has chosen a pretty unusual best friend - a loving golden retriever. Proud duck owner Pam Ishiguro has a flock of seven ducks but her four-year-old Pekin duck Rudy and golden retriever Barclay have formed the strongest bond. The Orange County-based mum said: The animals are much like my two boys - they have a love-hate relationship. When they are together, somebody is always chasing or jumping on someone else, but when they are apart, theyre always calling for each other. PHOTOGRAPH BY Pam Ishiguro / Barcroft Images London-T:+44 207 033 1031 E:hello@barcroftmedia.com - New York-T:+1 212 796 2458 E:hello@barcroftusa.com - New Delhi-T:+91 11 4053 2429 E:hello@barcroftindia.com www.barcroftimages.com (Photo credit should read Pam Ishiguro / Barcroft Images / Barcroft Media via Getty Images)
  • 幻灯片 37 - 5: One of 17 puppies sleeping in Bad Zwischenahn, Gemrany, 8 September 2016. At the end of August, female mastiff 'Maeuschen' brought 17 puppies to life. PHOTO: CARMEN JASPERSEN/dpa | usage worldwide (Photo by Carmen Jaspersen/picture alliance via Getty Images)
  • 幻灯片 37 - 6: STONEHAM, MA - AUGUST 22: Naphisa naps on a ledge as the Stone Zoo introduces Pandora and Naphisa, a pair of snow leopard cubs, in Stoneham, MA on Aug. 22, 2018. The cubs, both of which are female and who currently weigh 9.9 and 10.3 pounds, were born on May 16 to Kira, a 9-year-old female snow leopard, and Himal, a 9-year-old male who arrived from the Denver Zoo last December. (Photo by David L. Ryan/The Boston Globe via Getty Images)
  • 幻灯片 37 - 7: Red fox are sleeping, animal
  • 幻灯片 37 - 8: sleeping Harbour Seal on beach of island Helgoland, october 2018 | usage worldwide (Photo by Hinrich Bsemann/picture alliance via Getty Images)
  • 幻灯片 37 - 9: Koala 'Oobi-Oobi' sleeps on a tree in his new enclosure at the zoo in Leipzig, eastern Germany, on May 12, 2016. / AFP / dpa / Jan Woitas / Germany OUT (Photo credit should read JAN WOITAS/AFP/Getty Images)
  • 幻灯片 37 - 10: SHIROISHI, JAPAN - JANUARY 21: A fox is seen sleeping in the snow at the Zao Fox Village on January 21, 2018 in Shiroishi, Japan. (Photo by Matt Roberts/Getty Images)
  • 幻灯片 37 - 11: ECUADOR - 2018/06/03: A Galapagos sea lion is sleeping on the rocks of South Plaza Island in the Galapagos Islands, Ecuador. (Photo by Wolfgang Kaehler/LightRocket via Getty Images)
  • 幻灯片 37 - 12: 18 April 2018, Germany, Kriebstein: Acat sleeps in the sun at Kriebstein castle. Photo: Sebastian Kahnert/dpa (Photo by Sebastian Kahnert/picture alliance via Getty Images)
  • 幻灯片 37 - 13: A red panda sleeping in a tree at the Tierpark zoo in Berlin, Germany, 31 Janaury 2016. PHOTO: PAUL ZINKEN/DPA | usage worldwide (Photo by Paul Zinken/picture alliance via Getty Images)
  • 幻灯片 37 - 14: Sleeping Hoffmanns two toed Sloth Choloepus hoffmanni.
  • 幻灯片 37 - 15: TOPSHOT - A lion naps on a road-sign looking out onto the savannah at the Amboseli National Park June 21, 2018. - Amboseli is among the most renowned case studies in the world for elephant population and behavioural factors with the last official count of the perchyderms, carried out in the year 2011, yielding some 1200 animals. Preparations are underway for an Elephant aerial census over the 392 square-kilometre park with trial runs kicking off in June. (Photo by TONY KARUMBA / AFP) (Photo credit should read TONY KARUMBA/AFP/Getty Images)
  • 幻灯片 37 - 16: ST PETERSBURG, RUSSIA - DECEMBER 29, 2016: A cat sleeping at the Cats' Republic cafe in Liteyny Avenue. Sergei Konkov/TASS (Photo by Sergei Konkov\TASS via Getty Images)
  • 幻灯片 37 - 17: BIRMINGHAM, ENGLAND - MARCH 11: A weimaraner takes a nap during the second day of Crufts Dog Show on March 11, 2016 in Birmingham, England. First held in 1891, Crufts is said to be the largest show of its kind in the world, the annual four-day event, features thousands of dogs, with competitors travelling from countries across the globe to take part and vie for the coveted title of 'Best in Show'. (Photo by Ben Pruchnie/Getty Images)
  • 幻灯片 37 - 18: Female orangutan Farida takes a nap at the zoo in Gelsenkirchen, Germany, 13 December 2017. Due to the winter weather only a few visitors come to the zoo and the animals can relax. Photo: Roland Weihrauch/dpa (Photo by Roland Weihrauch/picture alliance via Getty Images)
  • 幻灯片 37 - 19: ROYAL OAK, MI - MAY 26: An Amur Tiger naps in its den at the Detroit Zoo in Royal Oak, Michigan on May 26, 2018. (Photo By Raymond Boyd/Getty Images)
  • 幻灯片 37 - 20: 12 May 2018, Germany, Berlin: California sea lions lying close together in their enclosure in the Berlin Zoo. Photo: Paul Zinken/dpa (Photo by Paul Zinken/picture alliance via Getty Images)
  • 幻灯片 37 - 21: 18 October 2018, North Rhine-Westphalia, Duisburg: An arctic fox lies in his enclosure and sleeps. Photo: Federico Gambarini/dpa (Photo by Federico Gambarini/picture alliance via Getty Images)
  • 幻灯片 37 - 22: Berlin, GERMANY: Little sun bear 'Ernst' sleeps on a branch 12 April 2007 in his enclosure at the Zoologischer Garten zoo in Berlin. 'Ernst' lives next to the enclosure where Berlin's new star, polar bear cub 'Knut', is presented to the public twice daily, and has nearly the same age as 'Knut'. But whereas visitors flock to Berlin zoo to get a glimpse of 'Knut' who survived rejection by his mother and who has become a marketing phenomenon in Germany, 'Ernst' draws attention of few visitors only. AFP PHOTO DDP/CLEMENS BILAN GERMANY OUT (Photo credit should read CLEMENS BILAN/AFP/Getty Images)
  • 幻灯片 37 - 23: TOKYO - JUNE 24: Three baby Fennecs sleep on one another at Sunshine International Aquarium on June 24, 2009 in Tokyo, Japan. The small nocturnal fox babies were born on May 17 and opened to the public from June 20 attracting many visitors to the Aquarium. (Photo by Junko Kimura/Getty Images)
  • 幻灯片 37 - 24: LOPBURI, THAILAND - FEBRUARY 16 : Monkeys sleep on each other on the Buddah at the Phra Prang Sam Yot temple February 16, 2004 in Lopburi, Thailand, about 160 kilometers north of Bangkok. Hundreds of monkeys live in the monkey temple getting fed by both tourists and locals. (Photo by Paula Bronstein/Getty Images)
  • 幻灯片 37 - 25: Red Panda Bears sleep in the Panda Bear enclosure at the Beijing Zoo on May 22, 2012. The zoo grounds were originally a Ming Dynasty imperial palace and finally opened to the public in 1908. The zoo's history states that during the WWII, most of the zoo's animals died of starvation with only 13 monkeys and one old emu surviving the war. AFP PHOTO/Mark RALSTON (Photo credit should read MARK RALSTON/AFP/GettyImages)
  • 幻灯片 37 - 26: KENYA - 2018/08/25: A male lion (Panthera leo) is sleeping in the Masai Mara National Reserve in Kenya. (Photo by Wolfgang Kaehler/LightRocket via Getty Images)
  • 幻灯片 37 - 27: A leopard seal (Hydrurga leptonyx) has a snooze on the ice on Cuverville Island, off the coast of Graham Land in the Antarctic Peninsula in Antarctica. 15/12/2006. Seals sleep sleeping happy (Photo by Jeff Overs/BBC News & Current Affairs via Getty Images)
  • 幻灯片 37 - 28: CANADA - 2000/01/01: Canada, Manitoba, Near Churchill, Tundra, Polar Bear Sleeping, Polar Bear (ursus Maritimus). (Photo by Wolfgang Kaehler/LightRocket via Getty Images)
  • 幻灯片 37 - 29: 08 February 2019, Berlin: Panda female Meng-Meng sleeps on a plateau in the zoo. Photo: Paul Zinken/dpa (Photo by Paul Zinken/picture alliance via Getty Images)
  • 幻灯片 37 - 30: WASHINGTON, DC - JANUARY 29: A Fennec Fox sleeps through the opening day of the Smithsonian's National Zoo after the longest government shutdown in the history of the United States in Washington, D.C., January 29, 2019. Thanks to the unconditional dedication of Zoo staffers and volunteers the animals of the Zoo were well taken care of during the shutdown. (Photo by Astrid Riecken For The Washington Post via Getty Images)
  • 幻灯片 37 - 31: Sled dog during winter in Uummannaq in the north west of Greenland. Dog teams are still draft animals for the fishermen of the villages and stay all winter on the sea ice of the fjord. North America. Greenland. Denmark. (Photo by: Martin Zwick/REDA&CO/UIG via Getty Images)
  • 幻灯片 37 - 32: Matadi the lion sleeps in the 'Makasi Simba' lion savanna at the zoo in Leipzig, Germany, 17 March 2015. Photo:Jan Woitas/dpa | usage worldwide (Photo by Jan Woitas/picture alliance via Getty Images)
  • 幻灯片 37 - 33: ANTARCTICA - FEBRUARY 26: Crabeater seals sleep as they lie on snow covered ice in Antarctica on February 26, 2019. Turkish scientific research team has completed their navigation after set up a research camp within the 3rd National Science Antarctica Expedition, under the auspices of Presidency of Turkey and under the coordination of the Ministry of Industry and Technology and Istanbul Technical University (ITU) Polar Research Center (PolReC). The continent, which is not under the rule of any countries, is called the 'science' and 'peace' continent. Antarctica, the world's fifth largest continent, with an area of 14 million square kilometers, is located in the southernmost part of the southern hemisphere. The 98 percent of the continent is covered with ice with an average thickness of 1.6 kilometers, contains 67 percent of the freshwater source on the Earth. The untouched nature of Antarctica is of great importance for our future of the world. Antarctica, which has no indigenous people, is home to penguins, seals, whales, birds and various animals. (Photo by Ozge Elif Kizil/Anadolu Agency/Getty Images)
  • 幻灯片 37 - 34: "A camel is resting at a salt mine in the Danakil Desert in Ethiopia. In the background the salt plates are visible, they will be loaded on the camels and they transport it in long caravans into the Ethiopian highlands. . See related images of the Danakil Desert in Ethiopia:"
  • 幻灯片 37 - 35: A baby giraffe sleeping in a cute position.
  • 幻灯片 37 - 36
  • 幻灯片 37 - 37: Sleeping Lemur
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