Two Iceland horses play in their paddock in Wehrheim, near Frankfurt, Germany, Thursday, October 26, 2017. (Photo by Michael Probst/AP Photo)





A picture taken on October 21, 2017 shows jellyfish swimming at the Jerusalem aquarium. (Photo by Thomas Coex/AFP Photo)





This picture taken on October 21, 2017 shows crocodiles at the Asam Kumbang Crocodile Park in Medan The park is the largest crocodile breeding area in Indonesia, built in 1959, now has nearly 2,000 crocodiles of different sizes and species. (Photo by Gatha Ginting/AFP Photo)





A pink cockatoo (Cacatua leadbeateri) curiously climbs a net fence in its enclosure at the zoo in Karlsruhe, Germany, 23 October 2017. (Photo by Ronald Wittek/EPA/EFE)





A cat at the Fluffytorium in Soho Square, London, England on October 26, 2017 a pop-up aimed at children who might not otherwise get the chance to spend time with pets. (Photo by Mikael Buck/Rex Features/Shutterstock)





A pangolin is seen in a cage after a recent raid in Pekanbaru, Riau province on October 25, 2017. Indonesian authorities have seized more than 100 critically endangered pangolins, an official said on October, a haul conservationists said was worth about 1.5 million USD. (Photo by AFP Photo/Wahyudi)





A pair of barn owls looks on at a rehabilitation and conservation centre at the Spier wine estate near Cape Town, South Africa on October 22, 2017. (Photo by Mike Hutchings/Reuters)





Migrating Great White pelicans rest as they are fed as part of an Israeli Agriculture Ministry funded project aiming to prevent the pelicans from feeding from commercial fish breeding pools, at a water reservoir in Mishmar Hasharon, central Israel October 24, 2017. (Photo by Ronen Zvulun/Reuters)





Migrating Great White pelicans are fed as part of an Israeli Agriculture Ministry funded project aiming to prevent the pelicans from feeding from commercial fish breeding pools, at a water reservoir in Mishmar Hasharon, central Israel October 24, 2017. (Photo by Ronen Zvulun/Reuters)





Two stag deer pause during a rutt at Bradgate Park in Newtown Linford, Britain October 27, 2017. (Photo by Darren Staples/Reuters)





Achilles and Karis, Sumatran tigers, eat pumpkins at a Halloween event at ZSL London Zoo, London. (Photo by Mary Turner/Reuters)





Tiger “Maruschka” (not pictured) and her four cubs meet the cubs' father “Yasha” for the first time in Hagenbecks zoo in Hamburg, Germany October 26, 2017. (Photo by Fabian Bimmer/Reuters)





Two deer clash antlers in a field near the village of Kobylintsy, some 305 km north of Minsk, on October 23, 2017. (Photo by Sergei Gapon/AFP Photo)





A newly born eastern black rhino eats a pumpkin in its enclosure at the zoo in Dvur Kralove, Czech Republic, Wednesday, October 25, 2017. An eastern black rhinoceros born in a Czech zoo is a small but important step in efforts to save the subspecies of the black rhinoceros from extinction. There are only last few hundreds remaining in African reserves, where they must be protected from poachers. The calf born on October 2 in the Dvur Kralove zoo is in good shape. (Photo by Petr David Josek/AP Photo)





A newly born eastern black rhino runs in its enclosure at the zoo in Dvur Kralove, Czech Republic, Wednesday, October 25, 2017. An eastern black rhinoceros born in a Czech zoo is a small but important step in efforts to save the subspecies of the black rhinoceros from extinction. There're only last few hundreds remaining in African reserves, where they must be protected from poachers. The calf born on Oct 2 in the Dvur Kralove zoo is in good shape. (Photo by Petr David Josek/AP Photo)





One of two young red panda cubs born at the Philadelphia Zoo makes its debut, in Philadelphia, Thursday, October 26, 2017. Red pandas are considered endangered in the wild and are native to the mountains of central China, Nepal and northern Myanmar. (Photo by Matt Rourke/AP Photo)





A dog in a pineapple costume attends the 27th Annual Tompkins Square Halloween Dog Parade in Tompkins Square Park on October 21, 2017 in New York City. More than 500 animals wear costumes to what is known as one of the largest dog Halloween events in the USA. (Photo by Eduardo Munoz Alvarez/Getty Images)





A dog in costume attends the 27th Annual Tompkins Square Halloween Dog Parade in Tompkins Square Park on October 21, 2017 in New York City. (Photo by Eduardo Munoz Alvarez/Getty Images)





Geese walk over a meadow in Veckenstedt, central Germany, on October 25, 2017. (Photo by Matthias Bein/AFP Photo/DPA)





A giant panda rests on a branch of tree at Shenshuping protection base in Wolong National Nature Reserve, southwest China's Sichuan Province, October 20, 2017. The base was reconstructed after a quake in 2008 and over 50 giant pandas including 19 born in this year are now living here. (Photo by Zhang Fan/Xinhua/Barcroft Images)





Clouded leopard male called Cayan in the outdoor enclosure at Usti nad Labem Zoo, Czech Republic on October 27, 2017. Clouded leopard is a wild cat occurring from the Himalayan foothills through mainland Southeast Asia into China. Its total population is suspected to be fewer than 10,000 mature individuals. Clouded leopards are the most talented climbers among Cats. In captivity, they have been observed to climb down vertical tree trunks head first, and hang on to branches with their hind paws bent around branchings of tree limbs. (Photo by Slavek Ruta/Rex Features/Shutterstock)





A young Bengal tiger cub smuggled into the US and seized at the Mexico border is displayed for the media during Operation Jungle Book at the US Fish and Wildlife Service in Torrance, California on October 20, 2017. Operation Jungle Book, a law enforcement initiative led by the US Fish and Wildlife Service that targeted wildlife smuggling, resulting in federal criminal charges against defendants who allegedly participated in the illegal importation and/ or transportation of numerous animal species – including a tiger, monitor lizards, cobras, Asian “lucky” fish, exotic songbirds and several coral species. (Photo by Mark Ralston/AFP Photo)