A big white goose takes off from the banks of the river Main with the banking district in the background in Frankfurt, Germany, on a grey Friday, October 28, 2016. (Photo by Michael Probst/AP Photo)





Red deer fight during the rutting season at a wildlife park on a fall day in Bonn, western Germany, Thursday, October 27, 2016. (Photo by Markus Schreiber/AP Photo)





A ring-tailed coati (Nasua nasua) feeds from a carved pumpkin in its enclosure at the zoo in Budapest, Hungary, Friday, October 28, 2016, three days ahead of Halloween. (Photo by Attila Kovacs/MTI via AP Photo)





Goshi the black Jaguar stands on top of a carved Halloween pumpkin in its enclosure as part of the Enchantment event at Chester Zoo in Chester, Britain October 24, 2016. (Photo by Phil Noble/Reuters)





Meerkats search for food inside a carved Halloween pumpkin in their enclosure as part of the Enchantment event at Chester Zoo in Chester, Britain October 24, 2016. (Photo by Phil Noble/Reuters)





A Red Panda searches for food inside a carved Halloween pumpkin in its enclosure as part of the Enchantment event at Chester Zoo in Chester, Britain October 24, 2016. (Photo by Phil Noble/Reuters)





Meerkats search for food inside a carved Halloween pumpkin in their enclosure as part of the Enchantment event at Chester Zoo in Chester, Britain October 24, 2016. (Photo by Phil Noble/Reuters)





Bernardo the Andean bear licks a carved Halloween pumpkin in his enclosure as part of the Enchantment event at Chester Zoo in Chester, Britain October 24, 2016. (Photo by Phil Noble/Reuters)





A barn owl stands on a jack-o-lantern carved from a pumpkin and used to symbolise Halloween or All Saints' Eve at the Zoom Torino zoo and amusement park in Cumiana, near Turin, northern Italy, on October 28, 2016, few days ahead of Halloween. (Photo by Marco Bertorello/AFP Photo)





A red panda in a zoo in Lodz, Poland, 29 October 2016. On the occasion of the upcoming Halloween animals from the Lodz zoo were given a surprise treat – hollowed pumpkins. (Photo by Grzegorz Michalowski/EPA)





A gull speeds upside down into the water to catch food in the Baltic Sea near Gold on the island of Fehmarn, northern Germany. on Monday, October 24, 2016. (Photo by Michael Probst/AP Photo)





A newly born female baby Eastern Black Rhinoceros calf walks in its enclosure at Dvur Kralove Zoo, Czech Republic, October 27, 2016. (Photo by David W. Cerny/Reuters)





A newly born female baby Eastern Black Rhinoceros calf stands with her mother Jola in their enclosure at Dvur Kralove Zoo, Czech Republic, October 27, 2016. (Photo by David W. Cerny/Reuters)





A newly born female baby Eastern Black Rhinoceros calf stands in its enclosure at Dvur Kralove Zoo, Czech Republic, October 27, 2016. (Photo by David W. Cerny/Reuters)





A newly born critically endangered eastern black rhino, with its mother Jola, walks in its enclosure at the zoo in Dvur Kralove, Czech Republic, Thursday, October 27, 2016. The female baby was born on Oct. 12, 2016, and is yet to be named. (Photo by Petr David Josek/AP Photo)





Golf, WGC-HSBC Champions Golf Tournament, Shanghai, China on October 28, 2016. A swan looks at a ball hit by Branden Grace of South Africa. (Photo by Aly Song/Reuters)





Egyptian animal trainer Mahasen al-Helw holds her pet lion as she speaks during an interview at her home in Cairo, Egypt October 19, 2016. Picture taken October 19, 2016. (Photo by Mohamed Abd El Ghany/Reuters)





A squirrel is seen in a park in central Chisinau, Moldova October 29, 2016. (Photo by Gleb Garanich/Reuters)





60-year-old “Puan”, who has been declared the oldest living Sumatran Orangutan in the world, is seen at Perth Zoo in Western Australia, in this handout image released October 27, 2016. Puan celebrated with a birthday breakfast of rambutans from her childhood home in Malaysia, Perth Zoo spokeswoman Danielle Henry said. She was gifted to the zoo in 1968 by the Sultan of Johor who received some native Australian animals in return. Perth Zoo is one of the top breeders of orangutans and Paun was the start of its breeding programme. Female orangutans in the wild do not generally live past 50, Henry said. (Photo by Alex Asbury/Reuters/Perth Zoo)





A male Asiatic Lion looks out from his enclosure at London Zoo, in London, Thursday, October 27, 2016. Environmentalists are warning that global wildlife populations have fallen an average of 58 percent when compared to the 1970s, in “The Living Planet” report from WWF and the Zoological Society of London. (Photo by Alastair Grant/AP Photo)





A Rupper's Griffon Vulture stretches its wings in its enclosure at London Zoo, in London, Thursday, October 27, 2016. (Photo by Alastair Grant/AP Photo)





A female tiger looks out from her enclosure at London Zoo, in London, Thursday, October 27, 2016. (Photo by Alastair Grant/AP Photo)





An eagle found itself under attack by an angry heron when it refused to budge from an African lagoon. (Photo by Max Waugh/Solent News & Photo Agency)





Dramatic pictures show the skirmish between an African fish eagle and the Goliath heron, which is the world's tallest species of heron, at Zimanga Game Reserve in South Africa. (Photo by Max Waugh/Solent News & Photo Agency)





Professional photographer Max Waugh, 40, captured the extraordinary battle from a purpose-built “hide” at the lagoon, designed to allow photographers to get even closer to wildlife without disturbing them. (Photo by Max Waugh/Solent News & Photo Agency)





In this Tuesday, October 25, 2016 photo, a flock of Canada geese take to the sky from a vacant lot where a house was destroyed in the Oakwood Beach neighborhood of Staten Island, in New York, four years after Superstorm Sandy ravaged the area with it's deadly storm surge. The Staten Island neighborhood of Oakwood Beach, improbably built on a salt marsh, is slowly being returned to nature after state officials concluded it would be foolish to rebuild in a place with so little protection from the sea. Under a state buyout program, 196 homes have been demolished so far. Another 103 will soon meet the same fate. (Photo by Kathy Willens/AP Photo)





The sea otter mother with her three day old newborn pup ontop of her to keep it dry and warm while it sleeps. This devoted mother otter kept her newborn pup dry as she let the baby ride on her belly. Nature photographer Suzi Eszterhas, 40, spotted the adorable pair of southern sea otters swimming in Monterey Bay, California. The mother lifted the pup out of the water and on to her belly to keep it warm and dry and also blew air into the pup's fur to groom it. Ms Eszterhas was shocked to see the otters come closer to where she was standing and the mother left her child to float alone in the water. (Photo by Suzi Eszterhas/Minden Pictures/Solent News & Photo Agency)





The sea otter mother with her three day old newborn pup ontop of her to keep it dry and warm while it sleeps. (Photo by Suzi Eszterhas/Minden Pictures/Solent News & Photo Agency)





The sea otter mother with her three day old newborn pup ontop of her to keep it dry and warm while it sleeps. (Photo by Suzi Eszterhas/Minden Pictures/Solent News & Photo Agency)





The three day old otter pup asleep while floating on the surface of the water. (Photo by Suzi Eszterha /Minden Pictures/Solent News & Photo Agency)