A photographer could bear-ly believe his eyes when a bear started waving at him. The friendly animal wandered to the front of his enclosure before sitting back in full view of zoo guests. He then lifts his powerful paw and excitedly waves in an almost human-like way at his new audience. The hilarious encounter was captured by keen photographer Andrey Slepnev, 31, while on a trip to Madrid Zoo, Spain on March 24, 2016. (Photo by Andrey Slepnev/Caters News)

Tong Jieping, 44-year-old mentally disabled patient, is chained by his foot inside his room, in Qunxing village of Wangjiang county, Anhui province, China, July 14, 2015. Tong was diagnosed mentally ill when he was in his 20s. His parents, both in their 70s, could not afford the medical treatments so they had to lock him up in chains to prevent him from running away, according to Tong's family. (Photo by Reuters/Stringer)

A Femen activist is led away by French police in Henin-beaumont, northern France, Sunday, May 7, 2017. Voters across France are choosing a new president in an unusually tense and important election that could decide Europe's future, making a stark choice between pro-business progressive candidate Emmanuel Macron and far-right populist Marine Le Pen. (Photo by Francois Mori/AP Photo)

Egrets stand on a field as an Egyptian farmer plants rice seedling in Egypt's fertile Delta in Tanta, Algharbeya governorate, 100 km from Cairo, Egypt, 22 June 2022. Egyptian Government reduced the planting of some crops that need a massive amount of irrigation water, while the government said it will reduce the rice agriculture area in Egypt, amid fear the Renaissance Dam project in Ethiopia could affect the amount of River Nile water reaching Egypt. (Photo by Khaled Elfiqi/EPA/EFE)

Thor Teigen poses in a fur jacket next to a thermometer displaying a temperature of 131 degrees Fahrenheit / 55 degrees Celsius at the Furnace Creek Visitors Center, in Death Valley National Park, Calif., Sunday, July 7, 2024. Forecasters said a heat wave could break previous records across the U.S., including at Death Valley. (Photo by Ty ONeil/AP Photo)

Passengers watch as The Waverley, the world's last remaining seagoing passenger paddle steamer arrives at Clevedon Pier on June 10, 2011 in Clevedon, England. Built in 1946, the trust which owns and operates the Waverley, is warning that this could be the last season for the vessel and is appealling for more public funding saying it is struggling to make ends meet in the current financial climate due in part to rising fuel costs. Restored in 1973 after service on Loch Long in Scotland, since 2003, Waverley has been listed in the British National Register of Historic Ships core collection as 'a vessel of pre-eminent national importance'. (Photo by Matt Cardy/Getty Images)

This photographer is walking on thin ice after taking stunning photographs inside an Alaskan ice cave that could collapse at any moment. With it's dazzling turquoise walls and and huge open spaces, it's hard to imagine that this incredible frozen cavern was only formed at the beginning of 2012. But despite it's seemingly mystical allure, the fascinating natural phenomena is at risk of collapsing in on itself without warning. (Photo by Ron Gile/Caters News)

Fishermen move a fishing boat to a safer place along the shore ahead of cyclone Hudhud at Ganjam district in Odisha October 11, 2014. The India Meteorological Department described Cyclone Hudhud as a “very severe” storm that could pack winds of 195 kilometers (120 miles) per hour and cause torrential rains when it makes landfall near the port city of Visakhapatnam around noon Sunday. (Photo by Reuters/Stringer)