A muddy face at Wincanton Racecourse on November 17, 2016 in Wincanton, England. (Photo by Alan Crowhurst/Getty Images)





A staff of Sumatran Orangutan Conservation Programme puts nail polish on an sumatran orangutan (Pongo abelii) to distract him after the surgery at Sumatran Orangutan Conservation Programme's rehabilitation center on November 12, 2016 in Kuta Mbelin, North Sumatra, Indonesia. The Orangutans in Indonesia have been known to be on the verge of extinction as a result of deforestation and poaching. Found mostly in South-East Asia, where they live on the islands of Sumatra and Borneo, the endangered species continue to lose their habitat as a result of corporate expansion in a developing economy. Indonesia approved palm oil concessions on nearly 15 million acres of peatlands over the past years and thousands of square miles have been cleared for plantations, including the lowland areas that are the prime habitat for orangutans. (Photo by Ulet Ifansasti/Getty Images)





A black- crowned night- heron catches a fish from lake Wantan in New Taipei City on November 11, 2016. The black- crowned night heron is a medium- sized (60 cm), stocky heron with black crown and back, creamy white undersides and gray wings. In breeding plumage it has two long, thin white plumes on its nape. Its legs and feet are yellow, its bill black and its iris red. (Photo by Sam Yeh/AFP Photo)





This November 17, 2016 photo shows a 5-week-old lion plays with his leg in the hay of his enclosure at the Fresno Chaffee Zoo, in Fresno, Calif. The zoo is showing off a new lion cub and asking zoo-goers to choose his name. (Photo by John Walker/The Fresno Bee via AP Photo)





This November 17, 2016 photo shows a 5-week-old lion cub uses his mom's back foot as a pillow as he takes a catnap at the Fresno Chaffee Zoo, in Fresno, Calif. (Photo by John Walker/The Fresno Bee via AP Photo)





In this November 17, 2016 photo a 5-week-old lion cub relaxes in the hay after a nap in his enclosure at the Fresno Chaffee Zoo, in Fresno, Calif. (Photo by John Walker/The Fresno Bee via AP Photo)





In this November 17, 2016 photo a 5-week-old lion cub tries climbing up his mom's back at the Fresno Chaffee Zoo, in Fresno, Calif. (Photo by John Walker/The Fresno Bee via AP Photo)





A squirrel stands in Valentino Park in Turin, on November 18, 2016. (Photo by Marco Bertorello/AFP Photo)





In this Friday, November 4, 2016, photo, a sarus crane, who was injured since introduced to wildness, stretches in the wild near a bird acclimating center in Buriram, Thailand. It's a dicey moment when a sarus crane first flies: Sometimes they crash into trees, other times they face plant on touchdown. The tallest flying birds in the world, 70 incubator-hatched, hand-fed sarus cranes have been raised and released over the past five years in Thailand’s farm-rich northeast province of Buriram. (Photo by Gemunu Amarasinghe/AP Photo)





An owl flies over the stadium during the 2018 FIFA World Cup qualifier football match between Honduras and Trinidad & Tobago, in San Pedro Sula, Honduras on November 15, 2016. (Photo by Gerardo Mazariegos/AFP Photo)





An ostrich and its young are seen at Talampaya National Park in Argentina's province of La Rioja, November 12, 2016. (Photo by Enrique Marcarian/Reuters)





A purebred Spanish horse is seen during the Sicab International Pre Horse Fair which is dedicated in full and exclusively to the purebred Spanish horse in the Andalusian capital of Seville, southern Spain November 15, 2016. (Photo by Marcelo del Pozo/Reuters)





A purebred Spanish horse is seen during the Sicab International Pre Horse Fair which is dedicated in full and exclusively to the purebred Spanish horse in the Andalusian capital of Seville, southern Spain November 16, 2016. (Photo by Marcelo del Pozo/Reuters)





A purebred Spanish horse is seen during the Sicab International Pre Horse Fair which is dedicated in full and exclusively to the purebred Spanish horse in the Andalusian capital of Seville, southern Spain November 16, 2016. (Photo by Marcelo del Pozo/Reuters)





A golden pheasant is seen at Hangzhou Safari Park in Hangzhou, Zhejiang Province, China, November 13, 2016. According to local media, the pheasant gains popularity as its golden feathers resemble the hairstyle of U.S. President-elect Donald Trump. (Photo by Reuters/Stringer)





A golden pheasant is seen at Hangzhou Safari Park in Hangzhou, Zhejiang Province, China, November 13, 2016. (Photo by Reuters/Stringer)





A golden pheasant is seen at Hangzhou Safari Park in Hangzhou, Zhejiang Province, China, November 13, 2016. (Photo by Reuters/Stringer)





Indian pet rescuer displays a white owl rescued at Cubbon Park in Bangalore, India, 17 November 2016. The white owl was rescued from an eagle attack. (Photo by Jagadeesh N.V./EPA)





Laying hens in the chicken farm of Avicole Delacuisine in Daillens, Switzerland, 16 November 2016. Protective measures against bird flu are being introduced nationwide after cases in wild birds were found by Lake Geneva and Lake Constance. From Wednesday Nov. 16, all feed and water for poultry will have to be kept inside to prevent any possibility of wild birds coming into contact with farmed birds, the Federal Food Safety and Veterinary Office said on Tuesday. (Photo by Laurent Gillieron/EPA)





Greater Adjutant Storks stand on top of a garbage pile at a garbage dumping site near Deepor Beel Wildlife Sanctuary on the outskirts of Guwahati city, Assam, India, 14 November 2016. Fast vanishing wetlands in and around Guwahati city has now become a major threat for the survival of this bird species. Guwahati city has the largest concentration of the Greater Adjutant Stork in the world but their numbers are gradually declining due to loss of wetlands, habitat and availability of food. (Photo by EPA/Stringer)





In this November 17, 2016 photo, a Siamese fighting fish with colors resembling the Thai national flag swims in a fish tank in Nakhon Pathom, Thailand. Pictures of the fish's blue, red and white horizontal stripes went viral upon being posted on a private Betta fish auction group on Facebook since its colors closely resembled the Thai flag and sold for a record breaking 53,500 baht ($1,528), making it the most expensive Betta fish to ever be sold. (Photo by Chuchat Lekdeangyu/Shutter Prince via AP Photo)





In this photo taken Tuesday, November 15, 2016 a baby macaque rests in its mother's lap at the Tbilisi Zoo in Tbilisi, Georgia. Nine monkeys that France's Auvergne Zoo has given to the Tbilisi Zoo have become a local attraction after the zoo lost all of its monkeys in the devastating floods in 2015 which left hundreds of animals dead. The Tbilisi Zoo has received more than 70 new animals this year from zoos around the world. (Photo by Shakh Aivazov/AP Photo)





This November 10, 2016 photo released by Mexico's office for environmental protection (PROFEPA) shows a sea lion after it was untangled from fishing lines which severely injured its neck, as it is released back into the wild in Espiritu Santo, Mexico. PROFEPA says their program to untangle sea lions has successfully operated on seven of the animals in the area and is training personnel from the states of Sonora and Baja California, to extend the program to other areas. (Photo by Christian Vizl/PROFEPA via AP Photo)





A squirrel sits on a tree on November 14, 2016 at the Wilhelma zoo in Stuttgart, southern Germany. (Photo by Lino Mirgeler/AFP Photo/DPA)