Spectators watch a pig fighting event in Leishan County, southwest China's Guizhou Province. (Photo by Reuters/Stringer)

Giant Panda cub Fu Bao, meaning lucky leopard, clings to a tree stump in its enclosure at the zoo in Vienna January 10, 2014. It is the Panda's second public appearance outside of its tree cave since it's birth on August 14, 2013. (Photo by Heinz-Peter Bader/Reuters)

People look on at a dead sperm whale that appeared to have been dead for a while before floating ashore on January 10, 2014 in Boca Raton, Florida. The whale was found this morning and officials with the Florida Fish and Wildlife Conservation Commission and the National Oceanic and Atmospheric Administration were on scene to conduct tests to try to determine the cause of death. (Photo by Joe Raedle/Getty Images)

Canadian Geese stand on the frozen waters of the Washington Channel on January 8, 2014 in Washington, DC. A polar vortex that has swept the east coast brought dangerously cold temperatures. (Photo by Mark Wilson/Getty Images)

At first the police in the southeastern city of Wenzhou suspected the two men were loading a human corpse into their S.U.V. The person-shaped object they were carrying was wrapped in a striped tarpaulin, of the kind commonly seen on construction sites across China, and bound in rope. But when they unwrapped the tarpaulin, the two officers were stunned to find a dead tiger. The police apprehended the man who had remained by the S.U.V. and impounded the tiger and the vehicle, according to a notice posted on an official Sina Weibo account. The police identified the man in custody as the owner of the S.U.V., a 31-year-old surnamed Wang from Fuzhou, in Jiangxi Province, and said they had detained him on suspicion of illegal trade in an endangered species. The police report said the authorities suspected the carcass to be of a Siberian, or Amur, tiger, one of the world’s most endangered animals, and had sent samples to be tested. As of Thursday, the police said the investigation was continuing. No information was released on the suspect who ran away. Under Chinese criminal law, anyone convicted of illegally capturing, killing or trading in endangered species can face fines and 10 years in prison. (Photo by Reuters/China Daily)

A male buffalo knocks a male lion several feet backwards through the air in the South Luangwa National Park, Zambia, on January 7, 2014. (Photo by Rob Brookes/Barcroft Media)

A horse drinks water from a hole in a frozen water tank Monday January 6, 2014, in Enid, Oklahoma. Record low temperatures were set in at least two Oklahoma cities as a frigid front moved into the state. (Photo by Billy Hefton/AP Photo/Enid News & Eagle)

Three Minke whales are pictured on the deck of the Japanese whaling vessel Nisshin Maru inside what Sea Shepherd Australia says is an internationally recognised whale sanctuary in this handout image dated January 5, 2014. Aerial footage released by the Sea Shepherd Conservation Society appeared to show the bloodied remains of three minke whales on board the Japanese factory ship Nisshin Maru as it sailed in the Southern Ocean. The group said it had information that a fourth whale had also been killed. (Photo by Tim Watters/Sea Shepherd Australia)

In this picture taken on January 9, 2014, an official holds baby pig-nosed turtles in Tangerang, Banten province. Officials in Indonesia rescued more than 8,000 baby pig-nosed turtles stuffed in suitcases, suspecting the vulnerable creatures were destined for markets in Singapore or China, a spokesman said. (Photo by Bima Sakti/AFP Photo)

A ring-tailed lemur looks at an abacus during a photo call for Whipsnade Zoo's annual stocktake in Dunstable, Bedfordshire, north of London, on January 7, 2014. (Photo by Carl Court/AFP Photo)

Edinburgh Zoo undated handout photo of Yooranah, a koala joey, said to be the first in the UK, that has been named after keepers discovered that it is a male, on January 9, 2014. (Photo by Edinburgh Zoo/PA Wire)

A cat stands near a defaced presidential campaign poster of ousted President Mohammed Morsi in Cairo, Egypt, Wednesday, Jan. 8, 2014. The judge in the trial of Egypt's former Islamist president has ordered the hearings adjourned until Feb. 1 after bad weather prevented bringing Morsi to court. (Photo by Amr Nabil/AP Photo)

Bantu, a Silverback gorilla, gestures at the Chapultepec zoo in Mexico City on January 09, 2014. (Photo by Omar Torres/AFP Photo)

In this photo provided by the Vatican paper L'Osservatore Romano Tuesday, January 7, 2014, Pope Francis is placed a lamb around his neck as he visits a living nativity scene staged at the St. Alfonso Maria de' Liguori parish church, in the outskirts of Rome, Monday, January 6, 2014. The Epiphany day, is a joyous day for Catholics in which they recall the journey of the Three Kings, or Magi, to pay homage to Baby Jesus. (Photo by Osservatore Romano/AP Photo)

Basset Hounds Swan (B) and Toya during a press session for the 40th international dog show “Cacib 2014” in Nuremberg, Germany, 09 January 2014. More than 3,500 purebreed dogs from all over the world will be on show in the 2014 Cacib on 11 and 12 January. (Photo by Daniel Karmann/AFP Photo/DPA)

A Nepalese resident feeds pigeons in Durbar Square in Kathmandu on January 9, 2014. Home to the palaces of Malla and Shah kings who ruled over the city, Durbar Square is listed as a UNESCO world heritage site. (Photo by Prakash Mathema/AFP Photo)

Divers swim with dozens of West Indian Manatees early Tuesday, January 7, 2014, as the animals congregate around a freshwater spring at the Three Sisters Springs on the Crystal River north of Tampa, Fl. Local temperatures Tuesday morning dipped below freezing redirecting the animals to the warm springs at the Crystal River National Wildlife Refuge. (Photo by Matthew Beck/AP Photo/Citrus County Chronicle)

Christine Baker wades through flood water, pulling her dog Archie in a boat, at the Abbey Fields caravan park after the River Thames flooded on January 8, 2014 in Chersey, England. Parts of the United Kingdon are entering a third week of flooding and stormy conditions. (Photo by Peter Macdiarmid/Getty Images)

Giraffe cub Katja nestles to its mother at the Opelzoo in Kronberg, central Germany, Tuesday, January 7, 2014. The animal belongs to the endangered subspecies Rothschild's giraffe (giraffa camelopardalis rothschildi) and was born on Jan. 2. (Photo by Frank Rumpenhorst/AP Photo/DPA)

Divers counting and measuring the residents of an aquarium during the annual stocktaking in Oberhausen, Germany, Wednesday, January 8, 2014. The biggest pool at the aquarium has a capacity of 1,5 million liter and is home for about 1800 animals. (Photo by Martin Meissner/AP Photo)

This the hilarious moment a tiger decided to play a prank on its unsuspecting sibling, by pouncing on it whilst it was looking the other way. (Photo by Caters News)

A photo made available 08 January 2014 shows polar bear “Nanuq” through the glass wall of the basin of his enclosure diving for an ice cake made of frozen fish, meat and fruit in the zoo in Hanover, Germany, 07 January 2014. (Photo by Christophe Schmidt/EPA)

These animals don't give a monkey's as they relax and bathe each other while enjoying a natural spa day. (Photo by Robert Mullner/Solent News)

Japanese Macaque monkeys groom each other and relax in a hot spring at the Jigokudani, or Hell's Valley Monkey Park on January 8, 2014 in Yamanouchi, Nagano, Japan. (Photo by The Asahi Shimbun via Getty Images)

These are the beautiful first images of a newborn baby gorilla lovingly being cradled by its doting mother. (Photo by Caters News)

These little grizzly bear cubs had fun making a real splash when their mum took them for a dip to learn how to fish. Kamchatka, Russia. (Photo by Marco Mattiussi/Solent News & Photo Agency)

This hungry elk got a shock when he stopped to look for a snack in a tree – but ended up knocking a huge shower of snow onto his head at Yellowstone National Park in Wyoming. (Photo by Keith Crowley/Solent News & Photo Agency)

A wholesaler checks the quality of fresh tunas displayed at the Tsukiji market before the New Year's auction in Tokyo. (Photo by Yuya Shino/Reuters)

The first gemsbok (Oryx gazella) cub born in captivity ten days ago, stays next to its mother at the Chapultepec zoo in Mexico City on January 09, 2014. (Photo by Omar Torres/AFP Photo)

Undated handout photo issued by BAS of Emperor penguins, as some of them are having to struggle up 100ft walls of ice as warmer temperatures force them out of their traditional breeding grounds, a study has shown. The gravity-defying march of the penguins was spotted by British Antarctic Survey scientists in satellite images of four colonies. The birds normally breed on thin sea ice, close to easily accessible food sources. But ice forming later than usual in recent years has compelled them to move to much thicker floating ice shelves. Experts believe the unusual behaviour could indicate that the penguins are adapting to environmental change. (Photo by BAS/DigitalGlobal/PA Wire)

This picture taken on January 6, 2014 shows a Siberian tiger walking by a visitors' bus at the Siberian Tiger Park in Harbin, northeast China's Heilongjiang province. The Siberian Tiger Park was built in 1996, located on the north bank of the Songhua River and occupying an area of 1,440,000 square meters (355.8 acres), is the largest natural park for wild Siberian tigers in the world. (Photo by Goh Chai Hin/AFP Photo)

Bao Bao, the four and a half month old giant panda cub, looks at a plastic ball as she trains with animal keepers inside her habitat at the Smithsonian's National Zoo in Washington, Tuesday, January 7, 2014. Bao Bao, who now weighs 17.38 pounds (7.9 pounds), was born to the zoo's female giant panda Mei Xiang and male giant panda Tian Tian. (Photo by Charles Dharapak/AP Photo)

Seagulls fly past Manhattan and One World Trade Center next to the Hudson River, as seen from Hoboken, New Jersey, on January 7, 2014. (Photo by Gary Hershorn/Reuters)