Panda cub Bao Bao hangs from a tree in her habitat at the National Zoo in Washington on her first birthday, Saturday, August 23, 2014. The National Zoo is celebrating with a traditional “Zhuazhou” ceremony, a Chinese birthday tradition symbolizing long life. (Photo by Pablo Martinez Monsivais/AP Photo)

A rescued chinchilla is held by a veterinarian at the San Diego Humane Society in Oceanside, California after Hollywood mogul and co-creator of The Simpsons, Sam Simon, financed the purchase of a chinchilla farm in order to rescue over 400 chinchillas and close the Vista, California business August 19, 2014. In what all parties described as a "win-win" deal, 90-year-old owner Lurlie Adams was able to offload the farm she did not want any more to Simon for $50,000. And the 425 chinchillas were moved to much larger cages while awaiting adoption. (Photo by Mike Blake/Reuters)

A leopard walks at Yala National Park in southern Sri Lanka August 24, 2014. (Photo by Dinuka Liyanawatte/Reuters)

Giant panda triplets turn one-month-old at Chimelong Safari Park in Guangzhou, Guangdong province August 28, 2014. According to local media, they are the fourth set of giant panda triplets born with the help of artificial insemination procedures in China, and the birth is seen as a miracle due to the low reproduction rate of giant pandas. (Photo by Alex Lee/Reuters)

One of the 1-month-old panda triplets receives a checkup at the Chimelong Safari Park in Guangzhou in south China’s Guangdong province, on August 28, 2014. The three cubs were born July 29. (Photo by Kin Cheung/AP Photo)

A tiger is seen in a cage before a rehearsal at the Fuentes Boys Circus in Mexico City July 31, 2014. Mexico City's government overwhelmingly passed a law on June 2014, which imposed stiff penalties of up to $60,000 on circuses in the capital that use animals such as lions, camels and horses in their performances. Circuses have one year to comply with the ruling. (Photo by Henry Romero/Reuters)

Migrating dolphins reach Port Alfred on their trip up the Eastern Cape on August 12, 2014 in Port Alfred, South Africa. Thousands of dolphins dive through the sparkling waters as they migrate along the Eastern Cape of South Africa. Photographer couple Silke and Rainer Schimpf followed the dolphins for seven months before shooting the spectacular images. In Port Alfred the photographers found perfect conditions to take incredible images of the marine mammals. (Photo by Rainer Schimpf/Barcroft Media)

Andreas Kiefer (B) and Rolf Klenk (T) examine a Brown long-eared bat in Mudershausen, Germany, 21 August 2014. Members of the bat protection work group in Rhineland-Palatinate have carried a night net catching action to measure the stock of bats in an old tunnel near Mudershausen. (Photo by Fredrik von Ercihsen/EPA)

A Ukrainian Levkoy cat looks at the camera during a diving competition at the “Hund und Katz” (Dog and Cat) trade show in Leipzig, Germany, 24 August 2014. The competition is one of the highlights of the exhibition. More than 5,000 pedigree dogs from 15 nations and about 300 cats are presented during the trade fair. (Photo by Hendrik Schmidt/EPA)

Five-year-old Erik looks at a Dalmatian as they stand in two dog boxes during the “Hund und Katz” (Dog and Cat) trade show in Leipzig, Germany, 24 August 2014. The competition is one of the highlights of the exhibition. More than 5,000 pedigree dogs from 15 nations and about 300 cats are presented during the trade fair. (Photo by Hendrik Schmidt/EPA)

A Barbary lion baby inspects its open air enclosure at the zoo in Hanover, central Germany, on August 28, 2014. Three lion babies were born at the zoo on July 1, 2014. (Photo by Holger Hollemann/AFP Photo/DPA)

Baloo (R), a North American Black Bear, rubs snouts with his companion Shere Hkhan, a Bengal tiger, inside their shared enclosure at Noah's Ark animal sanctuary in Locust Grove, Georgia, USA, 28 August 2014. According to the facility, the pair and a lion named Leo, were confiscated at a young age from a drug dealer's basement in Atlanta, Georgia. Noah's Ark cares for about 100 different species of animals on a 250 acre farm since 1990. (Photo by Erik S. Lesser/EPA)

Young African wild dogs also called Lycaon pictus, are pictured on August 25, 2014 at the Bioparco of Rome (Rome's zoo). Zampa and Sax were born in May at the Bioparco and fed by their parents, a young couple of wild dogs, before their presentation to the public, few days ago. (Photo by Tiziana Fabi/AFP Photo)

Young African wild dogs are seen at a zoo in Rome, on August 25, 2014. The 3-month-old siblings, named Zampa and Sax, had been presented to the public a few days earlier. (Photo by Tiziana Fabi/AFP Photo)

Animal keepers Frithjof Behlau (L) und Oliver Kant of central German wild life Serengeti Park Hodenhagen pour a bucket of water onto female elephant Nelly during an Ice Bucket Challenge on August 25, 2014. The Ice Bucket Challenge is an initiative to raise awareness and funds for Amyotrophic Lateral Sclerosis (ALS) also known as Motor Neuron Disease (MND). People all over the world have already participated in the challenge, elephant Nelly however took part without the ice in the water. (Photo by Julian Stratenschulte/AFP Photo/DPA)

Undated handout photo issued on August 27, 2014 by Bristol Zoo Gardens of a yellow mongoose pup with one of their parents that has been welcomed at the zoo. (Photo by Bob Pitchford/PA Wire)

Undated handout photo issued on August 27, 2014 by Bristol Zoo Gardens of a critically endangered Vietnamese box turtle, weighing just 14.6g and the size of a matchbox, that hatched after being kept at constant temperature for 85 days and has been welcomed at the zoo. (Photo by Bristol Zoo Gardens/PA Wire)

An Indian snake charmer handles a cobra while waiting for alms from Hindu devotees during the Teej festival at the Sangam in Allahabad on August 28, 2014. The three-day long Teej festival, celebrated by Hindu women in Nepal and some parts of India, is observed with married women fasting during the day and praying for long lives for their husbands, while unmarried women wish for handsome husbands and happy conjugal lives. (Photo by Sanjay Kanojia/AFP Photo)

A humpback whale feeds less than six miles from New York City in this handout photo courtesy of The Wildlife Conservation Society taken August 27, 2014. Waters off New York City and the greater New York Bight serve as a feeding ground, nursery, and migratory corridor for many species of marine life including whales, dolphins, sharks, fish, and sea birds, according to The Wildlife Conservation Society. (Photo by Julie Larsen Maher/Reuters/The Wildlife Conservation Society)

A praying mantis stands on a fence at Scranton Memorial Stadium in Scranton, Pa. on Friday, August 29, 2014. (Photo by Michael J. Mullen/AP Photo/Scranton Times-Tribune)

Undated handout photo issued on August 27, 2014 by British and Irish Association of Zoos and Aquariums (BIAZA) of a Sand lizard, one of the top 10 reptiles and amphibians avoiding extinction with the help of zoos. (Photo by James Probert/PA Wire/ARC)

A Yemeni man leaps over four camels during the Sana'a Summer Festival in Sana'a, Yemen, August 28, 2014. The tradition of camel jumping is more popular in Yemen. The tourist festival seeks to revive the tourism sector in the country after a four-year hiatus due to political chaos and security instability. (Photo by Yahya Arhab/EPA)

Shaun the shaggy Australian sheep has at last been shorn smooth. But the woolly wanderer wasn’t the wooliest of them all. The sheep apparently had been hiding for years on a farm on the island state of Tasmania and had never been shorn. The Australian Broadcasting Corp. reported Thursday that Shaun lost 23.5 kg (52 pounds) of wool at his first haircut. Owners Peter and Netty Hazel had hoped Shaun would beat a record held by a now-deceased New Zealand sheep named Shrek. Shrek rose to fame in 2004 after he was found hiding in caves on his farm, having evaded the annual shearing roundups for seven years. He had 27 kg (60 pounds) of wool shorn off his body. (Photo by AP Photo/AuBC via KYODO)

Stephanie Sinnett gives a macaw parrot a gentle shower to help it cool off on Thursday, August 21, 2014 at Zoo World in Panama City Beach, Fla. Workers at Zoo World take extra steps to keep their animals cool on hot days. (Photo by Patti Blake/AP Photo/The News Herald)

Three lion cups play while their mother guards the outdoor enclosure at the zoo in Hannover , Germany, Thursday August 28,2014. The three lions were born on the first of July. (Photo by Holger Hollemann/AP Photo/DPA)

A giraffe munches on a bush at the end of the visitors hours at Schoenbrunn Zoo in Vienna on August 27, 2014. (Photo by Joe Klamar/AFP Photo)

Monkeys sit at the Rangiri Dambulla Rajamaha Viharaya Buddhist pilgrimage site in Dambulla, Sri Lanka, August 29, 2014. The monkeys thrive in the holy area where devotees try to shoo off the animals from damaging ancient sites and religious symbols. (Photo by Ishara S. Kodikara/AFP Photo)

These amazing pictures show the ROAR aggression of two lions as they brutally fight to be the King of the Jungle. The two male lions, who are actually brothers, were captured fighting on camera by Laurent Renaud and Dominique Haution both 55-year-old teachers from northern France, who are seasoned safari photographers. (Photo by Laurent Renaud/Caters News)

A white lion cub holds a notebook in his mouth, as three sibling cubs are introduced to the public, at the Johannesburg Zoo, South Africa, Wednesday, August 27, 2014. Three playful lion cubs made their public debut Wednesday, pouncing their way into a large enclosure at the Johannesburg Zoo. Their arrival heralds a new generation of lions at the zoo, which hasn't successfully bred the king of the jungle in five years. (Photo by Denis Farrell/AP Photo)

An Indian one-horned rhinoceros and its calf wade through flood waters at a submerged area of the Pobitora wildlife sanctuary in India's northeastern Assam state on August 27, 2014. About 80 percent of the sanctuary is currently under flood waters caused by the overflowing Brahmaputra river. Forest authorities have strengthened security as poachers take advantage of the floods to hunt animals, particularly one-horned rhinos which, during the floods stray outside the park perimeter. Nearly 1.2 million people are currently affected by the floods. (Photo by Biju Boro/AFP Photo)

A cat runs on the pitch during a Spanish La Liga soccer match between FC Barcelona and Elche at the Camp Nou stadium in Barcelona, Spain, Sunday, August 24, 2014. (Photo by Manu Fernandez/AP Photo)

A 25-day black tiger lays on a red carpet on August 27, 2014 in Hangzhou, Zhejiang province of China. Black tiger is a rare colour variant of the tiger that owns the color of black due to pseudo-melanism. (Photo by ChinaFotoPress/Getty Images)

Andy Odum, Toledo Zoo assistant director of animal programs and curator of herpetology, photographs Emerson, Galapagos tortoise, as he is delivered and unboxed Wednesday, August 27, 2014, at the Toledo Zoo in Toledo, Ohio. Emerson is a wild-born tortoise estimated at 100 years old. He is being donated by the San Diego Zoo. (Photo by Jeremy Wadsworth/AP Photo/The Blade)

Tourist Lu Chen is attacked by two geese when he strayed too close to their nest, on August 27, 2014. A hapless tourist nearly drowned in a vicious attack by two geese when he strayed too close to their river nest in southern China. Stunned Lu Chen had been paddling in the stream to cool down in Gaowen Village in China's Guizhou province, when the two large birds flew at him. “I didn't know what was happening at first. There was a tremendous hissing and then they came straight at me”, he said later. “I tried to scare them off, but they just kept coming. They managed to knock me down in the river and I am sure they were trying to drown me. I just couldn't get them away”. One local said: “They won't allow anyone to walk in their stream. They are very territorial. This is where they raise their chicks, where they feed, and they do not tolerate intruders of any kind in their home. Anyone who lives here knows that and we never let our children play there. We should put up a sign to warn off tourists, but it's quite fun to watch”. (Photo by Europics)

Liang Liang, formerly known as Feng Yi, a female giant panda from China, eats carrot in celebration of its 8th birthday, at the Giant Panda Conservation Center at the National Zoo in Kuala Lumpur, Malaysia, Saturday, August 23, 2014. The two giant pandas on loan to Malaysia from China for 10 years to mark the 40th anniversary of the establishment of diplomatic ties between the two countries. (Photo by Lai Seng Sin/AP Photo)

In this photo taken August 20, 2014, a recently-hatched two-headed turtle is held at NEA Turtle Farm in Amagon, Ark. A state biologist says turtle mutations are rare, but are becoming more common. (Photo by Sarah Morris/AP Photo/The Jonesboro Sun)

A nurse of the Simon Bolivar Zoo's veterinary surgery, gives a medicine to a squirrel, in San Jose on August 28, 2014. Thousands of parrots, macaws, toucanes, monkeys, goldfinches, turtles and iguanas are catched in Costa Rica each year to be kept as pets, putting the species at risk. Fourty NGOs, public entities and professionals are holding the first Congress of Rescue, Recuperation and Release of Wild Fauna in the capital of this Central American country. (Photo by Ezequiel Becerra/AFP Photo)