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Lemurs 2012 07 13

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Lemurs declared most endangered vertebrates on Earth
Lemurs are more endangered than all other mammals.
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Apes, monkeys, lemurs among world's most endangered primates
Twenty five species have been identified as on the brink of extinction.
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Lemurs 2012 07 13

Two ring-tailed lemur babies sit on their mother's back at the zoo in Frankfurt, Germany, on Mar. 30, 2010.

THOMAS LOHNES
AFP/Getty Images