In this undated photo released by the Dallas Zoo, male baby elephant Ajabu sits along its mother Mlilo in the Giants of the Savanna exhibit at the Dallas Zoo in Dallas. The Dallas Zoo on Wednesday, October 12, 2016, announced the male calf named Ajabu has gone on public display, with his mother, in the Giants of the Savanna exhibit. Ajabu was born May 14 to Mlilo (muh-LEE'-loh). The pachyderm was pregnant when she arrived earlier this year at the Dallas Zoo. (Photo by The Dallas Zoo via AP Photo)





A male deer barks at dawn during the annual deer rutting season at Richmond Park in London, Britain, October 9, 2016. (Photo by Toby Melville/Reuters)





A male deer barks at dawn during the annual deer rutting season at Richmond Park in London, Britain, October 9, 2016. (Photo by Toby Melville/Reuters)





A male deer barks at dawn during the annual deer rutting season at Richmond Park in London, Britain, October 9, 2016. (Photo by Toby Melville/Reuters)





Charrapas tortoises (Podocnemis expansa) are seen at the Natural Park in Nueva Loja October 8, 2016. (Photo by Guillermo Granja/Reuters)





A squirrel monkey (Saimiri sciureus) at the Natural Park in Nueva Loja October 8, 2016. (Photo by Guillermo Granja/Reuters)





Charrapas tortoises (Podocnemis expansa) are seen at the Natural Park in Nueva Loja October 8, 2016. (Photo by Guillermo Granja/Reuters)





A peccary (Tayassuidae) is seen at the Natural Park in Nueva Loja October 8, 2016. (Photo by Guillermo Granja/Reuters)





A parrot is seen at the Natural Park in Nueva Loja October 8, 2016. Picture taken October 8, 2016. (Photo by Guillermo Granja/Reuters)





A tapir (Tapirus terrestris) is seen at the Natural Park in Nueva Loja October 8, 2016. Picture taken October 8, 2016. (Photo by Guillermo Granja/Reuters)





A lioness looks to the camera at the newly-established Al Ma'wa wildlife reserve, which hosts 10 different kinds of animals, in the northern town of Jerash, Jordan October 10, 2016. (Photo by Muhammad Hamed/Reuters)





A seagull perches on a wooden pole next to the Statue of Liberty in New York, U.S. October 12, 2016. (Photo by Yannis Behrakis/Reuters)





Great white pelicans stand in the water as they are fed by employees from the Israel's nature and parks authority, during their migrating season, in Mishmar Hasharon, central Israel October 13, 2016. (Photo by Baz Ratner/Reuters)





Great white pelicans stand in the water as they are fed by employees from Israel's nature and parks authority, during their migrating season, in Mishmar Hasharon, central Israel October 13, 2016. (Photo by Baz Ratner/Reuters)





Great white pelicans stand in the water as they are fed by employees from Israel's nature and parks authority, during their migrating season, in Mishmar Hasharon, central Israel October 13, 2016. (Photo by Baz Ratner/Reuters)





Great white pelicans stand in the water as they are fed by employees from Israel's nature and parks authority, during their migrating season, in Mishmar Hasharon, central Israel October 13, 2016. (Photo by Baz Ratner/Reuters)





A stag takes shade near a bench under a tree during autumn in Richmond Park, London, Britain October 14, 2016. (Photo by Dylan Martinez/Reuters)





A monkey waits for food from devotees near the Ruwanwelisaya Stupa, during a poya day or full moon day, in Anuradhapura, Sri Lanka October 15, 2016. (Photo by Dinuka Liyanawatte/Reuters)





Kumbuka the silverback gorilla eats watermelon in his enclosure in London, England on October 14, 2016. Management of London zoo said that his earlier escape was a “minor incident” that posed no danger to the public. (Photo by AP Photo)





Bruno, a 3-year-old rescue meets Basil, a 9-month-old flemish giant rabbit at Harbor Christian Church's Blessing of the Animals in Newport Beach on Sunday, October 9, 2016. (Photo by Mindy Schauer/The Orange County Register via ZUMA Wire)





This May 5, 2016 photo provided by the University of California, Santa Cruz, shows an elephant seal named Phyllis at Ano Nuevo Natural Preserve within Ano Nuevo State Park near Pescadero, Calif. UC Santa Cruz researchers say Phyllis has set a record by swimming farther west than any other tracked elephant seal. Officials said Wednesday, October 12, 2016, that by the time Phyllis arrives back in California in January 2017, she will have completed a 7,400-mile foraging adventure. (NMFS permit No. 19108). (Photo by Rachel Holser/University of California, Santa Cruz via AP Photo)





A group of young sea lions are let out of pet carriers before release into their natural habitat, in the coastal waters of the Palomino Islands, Peru, Friday, October 14, 2016. Peru's Organization for Research and Conservation of Aquatic Animals, or ORCA, brought nine sea lions back to health and released them into the sea near a reserve where hundreds of other sea lions live on Friday. Each sea lion is approximately seven months old and had been orphaned on the coast of Lima. (Photo by Martin Mejia/AP Photo)





A group of rehabilitated sea lions dive off a coast guard boat into the coastal waters of the Palomino Islands, Peru, Friday, October 14, 2016. (Photo by Martin Mejia/AP Photo)





Hundred of sea lions rest on Palomino Islands, near the port of Callao, Peru, Friday, October 14, 2016. (Photo by Martin Mejia/AP Photo)





A photo made available on 13 October 2016 shows Vilma the polar bear pictured in her enclosure at the zoo in Rostock, Germany, 12 October 2016. The polar bears are temporarily leaving the zoo while their enclosure is rebuilt. (Photo by Jens Büttner/EPA)