An American mink is seen at a creek near the village of Khatenchitsy, north of Minsk, September 15, 2015. (Photo by Vasily Fedosenko/Reuters)





An American mink is seen on a tree branch at a creek near the village of Khatenchitsy, north of Minsk, September 15, 2015. (Photo by Vasily Fedosenko/Reuters)





An American mink is seen in a tree hollow at a creek near the village of Khatenchitsy, north of Minsk, September 15, 2015. (Photo by Vasily Fedosenko/Reuters)





An American mink jumps at a creek near the village of Khatenchitsy, north of Minsk, September 15, 2015. (Photo by Vasily Fedosenko/Reuters)





A spectacled bear enjoys frozen fruit during hot weather at a zoo in Cali, Colombia, September 16, 2015. (Photo by Jaime Saldarriaga/Reuters)





Baboons enjoy frozen fruit during hot weather at a zoo in Cali, Colombia, September 16, 2015. (Photo by Jaime Saldarriaga/Reuters)





A lion enjoys meat frozen in a block of ice during hot weather at a zoo in Cali, Colombia, September 16, 2015. (Photo by Jaime Saldarriaga/Reuters)





Baboons enjoy frozen fruit during hot weather at a zoo in Cali, Colombia, September 16, 2015. (Photo by Jaime Saldarriaga/Reuters)





A brown bear enjoys frozen fruit during hot weather at a zoo in Cali, Colombia, September 16, 2015. (Photo by Jaime Saldarriaga/Reuters)





Titi monkeys eat fruit ice-cream at the zoo in Cali, Colombia, on September 16, 2015. Cali's zoo gives ice-cream to animals to counteract the high temperatures in the region. (Photo by Luis Robayo/AFP Photo)





A stag bells in a prairie near Chambord Castle, central France, September 16, 2015. The deer rutting season with the stags belling starts in mid September and runs until the end of October. (Photo by Philippe Wojazer/Reuters)





An injured vulture is treated at the VulPro Vulture Rehabilitation Centre in Hartebeepoortdam in the Magalisburg region on September 15, 2015. Confined to southern Africa, just under 4,000 breeding pairs of Cape Vultures remain in the wild, mostly in South Africa, Lesotho and Botswana. Unless conservation efforts are successful, Africa's largest vulture species may be facing eventual extinction. (Photo by Mujahid Safodien/AFP Photo)





A fly sits next to rain drops on a grass stalk near Burgdorf, Germany, 14 September 2015. (Photo by Julian Stratenschulte/EPA)





A female gorilla named Dian holds her twin babies in her arms in an enclosure of the zoo in Frankfurt am Main, Germany, 15 September 2015. Twin births are considered very rare among gorillas. (Photo by Winfried Faust/DPA via ZUMA Press)





A baby giraffe is shown to the public at the Hefei Wild Zoo in Hefei, capital of east China's Anhui Province on September 16, 2015. A name collection activity for the newly-born giraffe was held at the zoo recently. (Photo by Guo Chen/Xinhua via ZUMA Wire)





In this handout from the Smithsonian's National Zoo, a giant panda cub is seen at Smithsonian's National Zoo September 14, 2015 in Washington, DC. According to the zoo, the cub now weighs 881.5 grams or 1.9 pounds. (Photo by Erika Bauer/Smithsonian's National Zoo via Getty Images)





Two months old baby elephant Anjuli stands among family members on September 14, 2015 at the Tierpark Hagenbeck zoo in Hamburg, norhtern Germany. (Photo by Christian Charisius/AFP Photo/DPA)





A baby elephant plays as a herd of wild elephants, from a nearby hill of India's northeastern Meghalaya state, eat grass in the wetlands of Telalia, on the outskirts of Gauhati, India, Tuesday, September 15, 2015. Due to the increasing human population and deforestation, the areas for the wildlife get reduced and encroached incidents of wild animals straying into cities is increasingly reported. (Photo by Anupam Nath/AP Photo)





A male red panda cub is introduced during a press conference at the Rosamond Gifford Zoo in Syracuse, N.Y., Thursday, September 10, 2015. Director Ted Fox says the pair of cubs, born at the end of June, are evidence of the success of the zoo's red panda breeding program and will help ensure the survival of the endangered species. (Photo by Kevin Rivoli/The Syracuse Newspapers via AP Photo)





A raindrops hangs on the shell of a snail sitting on a leaf on September 14, 2015 near Burgdorf close to Hanover, central Germany. (Photo by Julian Stratenschulte/AFP Photo/DPA)