Tuesday, July 17, 2007

Clever Apes Recreate an Aesop Fable

clipped from news.yahoo.com

Orangutans are bright enough to use water as a tool, a finding that researchers say is straight out of Aesop's Fables. Five orangutans at the Leipzig Zoo in Germany were each shown shelled peanuts. The nuts floated out of reach inside a clear 10-inch-high plastic tube quarter-filled with water.

All of the orangutans collected water from a drinker and spat it inside the tube to float the peanuts high enough to grab them, averaging three mouthfuls before success. In their first attempts, the apes on average took nine minutes before they got the nuts, but they only needed just 31 seconds by their tenth try.

The findings reminded Mendes of the fable of the thirsty crow, which threw stones into a pitcher to raise and drink the otherwise unreachable water. And the research sheds light on the nature of intelligence among humanity's closest relatives, the great apes, she said.

"This is intriguing because it shows they solved problems that go beyond their immediate experience,"
cont'd: In the wild, orangutans are tree-dwellers that don't live near bodies of water, he explained. "It would be interesting to see how flexible they really are, how far they can go beyond what they've evolved to solve."

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