Saxophonist and composer Xavier Rosselle (L) and dancers (from L) Gilles Noel, Yura Park, Luc Petton and Sun-A Lee perform on stage with Manchurian cranes during a rehearsal of "Light Bird", choreographed by Luc Petton, at the Theatre de Chaillot in Paris on May 2. (ALAIN JULIEN/AFP/Getty Images)

A tiger licks a woman's hand at the Tiger Temple in Kanchanaburi province, Thailand, April 24. Thai forestry officials together with Wildlife Friends Foundation Thailand were present at the controversial Temple to request a tiger head count by means of chip implant reading, as well as to discuss the whereabouts of three allegedly missing tigers. (DIEGO AZUBEL/EPA)

A rescue dog belonging to the group of ISAR Germany (International Search And Rescue) searches the rubble following the earthquake, in Kathmandu, Nepal, April 28. (Wolfgang Rattay/Reuters)

A lemur sits on the shoulder of German Chancellor Angela Merkel on April 30 during an official opening of a penguin enclosure at the bird park in Marlow, eastern Germany. (STEFAN SAUER/AFP/Getty Images)

A large herd of grey cattle and buffalos move across a bridge over River Tisza as they are driven from their winter habitat in Tiszaug to their summer pasture in Tiszaalpar, Hungary, May 2. (SANDOR UJVARI/EPA)

Animal Care and Adoption Center of Texarkana mascot 'Porkchop' makes his way out of Adoption Center Director Charles Lokey's office in Texarkana, Texas. Porkchop, a 7-month-old pot-bellied pig was brought into the center after his former owner moved to a place that doesn't allow pigs. (Jerry Habraken/The Texarkana Gazette via AP)

Christy Gebritz, director of operations at Oaken Acres Wildlife Center uses an owl puppet, top, to feed two week old baby Great Horned Owl at the wildlife center in Sycamore, Ill. (Danielle Guerra/Daily Chronicle via AP)

First grader Rydge Tibbett walks around wearing a pith helmet with a rose-haired tarantula on it at a presentation on the unusual powers of exotic animals in Marshfield, Wisc., April 30. (Dan Young/The Marshfield News-Herald via AP)

City of Port Orchard Public Works employee Dan Castillo carries a rescued duckling to a holding box in Port Orchard, Wash., on May 1. (Larry Steagall/Kitsap Sun via AP)

An eagle is pictured at Zoom Torino, a zoological park in Cumiana near Turin, on April 22. Zoom Torino is a new immersive zoological park, where animals can be seen without bars or cages, only natural barriers ensure the visit. (MARCO BERTORELLO/AFP/Getty Images)

A trainer performs with a beluga whale at Chimelong Ocean Kingdom in Zhuhai, Guangdong province, April 22. (Reuters)

Two macaque monkeys belonging to Jamil Ismail dressed in Malaysian cultural outfits pose in their owner house in Kuala Lumpur. Baju Kurung, "Shaki" (left), and Baju Melayu, "JK", both nine years old, receive regular medical check-ups and are regarded as his family and move freely within his house (MOHD RASFAN/AFP/Getty Images)

University of Illinois College of Veterinary Medicine student Jon Bresolin ( left) works on a cougars' teeth as fellow students perform additional tests during an animal wellness check at Wildlife Prairie Park in Peoria, Ill. (Fred Zwicky/Journal Star via AP)

The Humane Society of the United States is working with the Puerto Rican government on a wide-ranging project to improve the lives of animals in the commonwealth. Alex Rothlisberger, HSI Senior Program Manager for Latin America and the Caribbean, gets a kiss from a dog at the spay and neuter clinic. (Ricardo Arduengo/AP Images for The Humane Society of the United States)

A farmer rests near his carabao before the start of the annual Carabao Festival in Pulilan, Bulacan in northern Philippines May 14. Water buffalos, locally known as carabaos, are led during a parade in the streets of the town to honour its patron saint San isidro Labrador, and carabaos will kneel in front of the church to give thanks for a year-long bountiful harvest. (Lorgina Minguito/Reuters)

People gather as a crowd of sea lions lay on floating docks at Pier 39 in San Francisco, May 4. Hundreds of sea lions began hauling out on the docks following the Loma Prieta earthquake of 1989, and face no natural predators at the pier. (Robert Galbraith/Reuters)

Patrons play with kittens from Maggie's Rescue at a pop-up Kitten Cafe in Paddington on May 14 in Sydney, Australia. The pop up cafe is open for four days as the owners prepare to launch Sydney's first permanent cafe later this July. (Ryan Pierse/Getty Images)

A man arrives to feed pigeons at a temple damaged after an earthquake in Kathmandu, Nepal, May 3. (Danish Siddiqui/Reuters)

Cerza zoo director Dorothee Ordonneau holds a canvas as a Brazilian tapir spreads paint on May 2 in the Cerza zoo, in Hermival-les-Vaux, France. The tapirs created paintings for World Tapir Day, which took place on April 27. The zoo will sell the paintings, and the funds will be bonated to the species' conservation. (/AFP/Getty Images)

Jellyfish are illuminated bright green by artificial lights as visitors browse at the Newport Aquarium, May 4, in Newport, Ky. (John Minchillo/Associated Press)

A Tibetan Terrier named Tom Tom looks through a camera during a press conference for the upcoming trade fair 'Hund & Katz' (Dog & Cat) in Dortmund, Germany, April 28. (MAJA HITIJ/EPA)

Humane Society International’s Animal Rescue Team deployed to Kathmandu, Nepal to offer emergency animal welfare aid following a devastating 7.8 magnitude earthquake.Two girls Dipika, left, and Susila, right, hold a family goat in Pahade Thapa Gaon, an agricultural village outside Kathmandu. (Jodi Hilton/AP Images for Humane Society International)

Horsemen ride close to pink flamingos in the Camargue regional natural park, near Arles, France, April 12. (Jean-Paul Pelissier/Reuters)

US Secretary of State John Kerry takes a selfie with a baby elephant while touring the Sheldrick Center Elephant Orphanage at the Nairobi National Park on May 3, in Nairobi. (Andrew Harnik/AFP/Getty Images)

A mother black bear with cubs runs toward a group of camera-clicking tourists as the animals cross a bridge in Yellowstone National Park on May 6. Montana Fish Wildlife and Parks spokesman Bob Gibson witnessed the encounter and said some visitors ignored or were slow to heed a park official's commands to leave the bridge (Bob Gibson/Montana Fish, Wildlife and Parks via AP)

A costumed Chihuahua dog poses during the 4th annual "Running of the Chihuahuas" in Washington, DC on May 3. (MLADEN ANTONOV/AFP/Getty Images)

A monkey crosses a road as motorists travel along it inside the Sanjay Gandhi National Park, in Mumbai, India, April 22. (DIVYAKANT SOLANKI/EPA)

A woman shows off her Alpacas during a display in the CBD celebrating the 25th anniversary of the Australian Alpaca in Melbourne, Australia, April 30. (TRACEY NEARMY/EPA)

Tourists observe an elephant on the Chobe river in Botswana Chobe National Park. In January 2014, the government banned hunting of all species of wild animals throughout the territory of Botswana, with few exceptions. A measure unpopular in Mabele, the village of local farmer Minsozie. (CHRIS JEK/AFP/Getty Images)

A newborn white Bengal tiger, born on April 18, is being fed by a guardian at a private zoo in Borysew near Lodz, central Poland, April 28. (Tomasz Stanczak/Agencja Gazeta via Reuters)

A white-bellied chachalaca (Ortalis leucogastra) stands on the head of a visitor of the Aurora zoo in Guatemala City on April 27. (JOHAN ORDONEZ/AFP/Getty Images)

A Prairie Dog wearing a costume of US superhero comic character Captain America reacts to a Golden Retriever dog during the Pet Expo Thailand 2015 press conference in Bangkok on May 11. (RUNGROJ YONGRIT/EPA)

Georgia Spausta holds five-day old angora rabbit kittens at a small farm in Herzogbirbaum, Austria April 17. The rabbits are clipped four times a year, each time giving some 300 grams of wool, about the amount needed to knit one pullover. (Heinz-Peter Bader /Reuters)

Iberian lynx Lila takes its first steps after being released on a farm near the village of Mazarambros near Toledo on April 24, part of an initiative to repopulate the endangered species. (PIERRE-PHILIPPE MARCOU/AFP/Getty Images)

A stranded sea lion pup sits in the back of a Mendocino County Sheriff's patrol car on April 19. Authorities in Northern California rescued the sea lion pup that waddled about a quarter-mile from the ocean. (Mendocino County Sheriff via AP)

Ring-tailed lemurs look at a camera at Zoom Torino, a zoological park in Cumiana near Turin, on April 22. Zoom Torino is a new immersive zoological park, where animals can be seen without bars or cages, only natural barriers ensure the visit. (MARCO BERTORELLO/AFP/Getty Images)

Ring-tailed lemurs are photographed by the camera on the ground at Zoom Torino on April 22. (MARCO BERTORELLO/AFP/Getty Images)