Zoological parks

In this undated photo provided by the Kansas City Zoo, three Macaroni penguin chicks are cared for just days after their birth at the zoo in Kansas City, Kansas. For the first time in the zoo's 110-year history, the zoo is home to Macaroni penguins from eggs provided by SeaWorld San Diego, that hatched eight fluffy chicks in incubators. (Kansas City Zoo via AP)

In this Aug. 2019, photo provided by the Oakland Zoo shows the eldest in Oakland Zoo's African elephant herd, M'Dunda in Oakland, Calif. Zoo officials announced M'Dunda, 50, died Tuesday, Dec. 3, 2019. (Sarah Levintin/Oakland Zoo, via AP)

In this Thursday, Nov. 28, 2019 photo, a giraffe runs in a fire on the grounds at the African Safari Wildlife Park in Port Clinton, Ohio. At least 10 animals have died in a barn fire that erupted at the wildlife park, officials said. (Aaron DiBucci via AP)

In this Sept 25, 2019 handout photo provided by the Fort Worth Zoo, Olaf is held by primary Puerto Rican crested toad zoo keeper Kelsey Barron, at the Fort Worth Zoo, in Fort Worth, Texas. Officials told The Associated Press Friday, Nov. 22, 2019, that Olaf, a critically endangered Puerto Rican toad, is one of more than 300 toads born via in vitro fertilization as U.S. scientists attempt to save it from extinction. (Fort Worth Zoo photo via AP)

Giant panda Bei Bei explores his surroundings on his first day at the Ya'an Bifengxia Base of the Giant Panda Conservation and Research Center in Ya'an in southwestern China's Sichuan Province, Thursday, Nov. 21, 2019. After a transcontinental flight on the "Panda Express," a furry American darling arrived early Thursday in his new Chinese home. The Washington-born giant panda Bei Bei was a beloved figure at the National Zoo, where he spent the first four years of his life. (Chinatopix via AP)

This Tuesday, Nov. 19, 2019, photo provided by the Oakland Zoo shows a Grizzly bear in water behind broken glass in Oakland, Calif. A child visitor, not the Grizzly bears, cracked a glass viewing window at the Oakland Zoo's bear exhibit and officials say there are no safety concerns. (Oakland Zoo via AP)

Smithsonian National Zoo employees carry bamboo to a FedEx transport truck as giant panda Bei Bei departs the Smithsonian National Zoological Park Tuesday, Nov. 19, 2019, in Washington. (AP Photo/Michael A. McCoy)

In this Thursday Nov. 7, 2019 photo, provide by the Berlin Zoo, nine years old male Panda Jiao Ling is prepared for an examination in the computer tomograph in Berlin, The veterinarians of the zoo wanted to investigate the function the different sized kidneys. (Berlin Zoo via AP)