Animal Cognition: Aesop's Fable Flies from Fiction to Fact

  • Taylor A
  • Gray R
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A new study shows that rooks are able to spontaneously drop stones into a tube of water to obtain a floating worm. This sophisticated problem solving raises intriguing questions about the use of imagination in animals. © 2009 Elsevier Ltd. All rights reserved.

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  • Alex H. Taylor

  • Russell D. Gray

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