Report names the world's 100 most endangered species

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Updated 0731 GMT (1531 HKT) September 12, 2012

There are less than 500 individual pygmy three-toed sloths left in the wild and are only found in on the Isla Escude de Veraguas, Panama.
Photos: The world's most endangered species
Hanging on: Pygmy three-toed sloth – There are less than 500 individual pygmy three-toed sloths left in the wild and are only found in on the Isla Escude de Veraguas, Panama.
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Found on Hainan island, China, conservationists believe less than 20 mature Hainan gibbons are still alive. Hunting has been the main reason for their perilous status as critically endangered.
Photos: The world's most endangered species
Hainan gibbon – Found on Hainan island, China, conservationists believe less than 20 mature Hainan gibbons are still alive. Hunting has been the main reason for their perilous status as critically endangered.
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The Luristan newt is only found in three fast-flowing streams in the southern Zagros mountains in Iran. Their illegal collection for the pet trade has led to less than 1,000 mature individuals being left in the wild.
Photos: The world's most endangered species
Luristan newt – The Luristan newt is only found in three fast-flowing streams in the southern Zagros mountains in Iran. Their illegal collection for the pet trade has led to less than 1,000 mature individuals being left in the wild.
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Trapping and reclamation of its winter grounds has left the spoon-billed sandpiper on the brink of extinction. The global population is thought to be less than 100 breeding pairs.
Photos: The world's most endangered species
Spoon-billed sandpiper – Trapping and reclamation of its winter grounds has left the spoon-billed sandpiper on the brink of extinction. The global population is thought to be less than 100 breeding pairs.
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