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A white tiger cub growls during a medical examination at the 'Serengeti' Safari Park in the northern German village of Hodenhagen August 3, 2010. Four tiger cubs, who are yet to be named, were born on July 14, 2010 at the private safari park. REUTERS/Morris Mac Matzen

Two

Two chimpanzees groom each other as they sit together in their Budongo Trail enclosure at Edinburgh Zoo, Scotland August 10, 2010. In March eleven new chimpanzees were introduced, in stages over six months, from Holland's Beekse Bergen safari park in order to create a 'super group' of twenty two. REUTERS/David Moir

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A white donkey is seen in the national park of Asinara island, northwest of Sardinia, August 7, 2010. The white donkey of Asinara, an albino variant of the more common Sardinian donkey, roams on the island. REUTERS/Alessandro Bianchi

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A man releases a Hawksbill turtle into the sea at the Sea Turtle Conservation Center of the Royal Thai Navy, in Sattahip, Chonburi province, east of Bangkok August 10, 2010. More than 700 endangered green and Hawksbill sea turtles were released ahead of the 78th birthday of Queen Sirikit. REUTERS/Chaiwat Subprasom

Ruchale,

Ruchale, a 41-year-old Sumatran Orangutan, nurses her week-old newborn Rachamim at the Safari in Ramat Gan near Tel Aviv August 9, 2010. REUTERS/Nir Elias

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A dog feeds its puppies on a deserted road during a curfew in Srinagar August 9, 2010. Indian authorities on Monday re-imposed a curfew in parts of their controlled Kashmir to thwart anti-India protests planned by Kashmiri separatists. Since June, at least 50 people have been killed in the protests in Kashmir, which lies at the heart of more than 60 years of hostility between India and Pakistan. Both claim the region in full but rule in part. REUTERS/Fayaz Kabli

Flamingos

Flamingos fly during sunrise at the Fuente de Piedra natural reserve, near Malaga, in southern Spain August 7, 2010. Around 600 flamingos are ringed and measured before being placed in the lagoon, one of the largest colonies of flamingos in Europe, according to authorities of the natural reserve. REUTERS/Jon Nazca

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A Pygmy Marmoset (Callithrix pygmaea) is seen at a primate rescue and rehabilitation center near Santiago August 3, 2010. The Pygmy Marmoset, known as the world's smallest monkey and under danger of extinction, was confiscated after being found inside the clothes of a Peruvian citizen during a highway police check at the northern city of Antofagasta, some 1367 km (849 miles) of Santiago. REUTERS/Ivan Alvarado

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A Pygmy Hippopotamus known as Petre eats lettuce and carrots in her enclosure at Taronga Zoo in Sydney August 5, 2010. REUTERS/Tim Wimborne

Flamingo

Flamingo chicks are gathered before being ringed at the Fuente de Piedra natural reserve, near Malaga, in southern Spain August 7, 2010. Around 600 flamingos are ringed and measured before being placed in the lagoon, one of the largest colonies of flamingos in Europe, according to authorities of the natural reserve. REUTERS/Jon Nazca

Zeina,

Zeina, the three-year-old lioness, plays with one of her four newborn cubs inside their cage at Jordan's zoo in Yaduda August 4, 2010. The two-month-old cubs made their first public appearance on Wednesday after being born to lions Zeina and Kasser, which originate from Africa, according to the zoo. REUTERS/Ali Jarekji

Rothschild

Rothschild giraffe Nora is seen with her newborn foal at Prague's zoo August 4, 2010. The male baby giraffe was born on July 24, 2010. REUTERS/David W Cerny

Six-month-old

Six-month-old female polar bear cubs play in a pool at the Royev Ruchey Zoo in Russia?s Siberian city of Krasnoyarsk, July 29, 2010. Two female wild polar bear cubs were found in Russia's Taimyr Peninsula on the coast of the Arctic Ocean in early May and were later housed in Krasnoyarsk zoo. REUTERS/Ilya Naymushin

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A month-old Pygmy Hippopotamus calf known as Kambiri explores her enclosure at Taronga Zoo in Sydney August 5, 2010. Zoo officials say Kambiri is the first Pygmy Hippo calf reared at the zoo in 20 years. REUTERS/Tim Wimborne

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A Pygmy Marmoset (Callithrix pygmaea) rests in its artificial shelter at a primates rescue and rehabilitation center near Santiago August 3, 2010. The Pygmy Marmoset, known as the world's smallest monkeys and under danger of extinction, was confiscated after being found inside the clothes of a Peruvian citizen during a highway police check at the northern city of Antofagasta some 1367 km (849 miles) of Santiago. REUTERS/Ivan Alvarado

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A donkey is seen in the national park of Asinara island, northwest of Sardinia, August 7, 2010. Picture taken August 7, 2010. REUTERS/Alessandro Bianchi

A

A volunteer holds the beak of a flamingo chick after it was ringed at the Fuente de Piedra natural reserve, near Malaga, in southern Spain August 7, 2010. Around 600 flamingos are ringed and measured before being placed in the lagoon, one of the largest colonies of flamingos in Europe, according to authorities of the natural reserve. REUTERS/Jon Nazca

A

A man plays with his pet iguana during the opening ceremony of the 2010 Taiwan International Tattoo Convention in Taipei July 30, 2010. The convention which is slated to run from July 30 - August 1 aims to gather people from all over the world to promote the industry and garner positive thinking towards tattoos. REUTERS/Nicky Loh

A

A six-month-old kangaroo (L) stands beside his mother in their enclosure during his official presentation at Berlin Zoo August 10, 2010. REUTERS/Fabrizio Bensch