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From Today's New York Times

Animal Ethics

To the Editor: Re “ Monkeys Think, Moving Artificial Arm as Own ” (front page, May 29): The brain really is a fascinating organ. So why were the monkeys used? May 29, 2008 The writer is in the department of ecology and evolutionary biology, University of Colorado. Marc Bekoff Boulder, Colo.,

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How much bird is there, anyway?

10,000 Birds

He had the habit of asking very similar question about the animals featured in his zoology lectures, including basic questions like how big they are, what limits physiology puts on their geographic range, etc. For instance, among animals, booby and noddy combined probably represents the majority of the biomass of the somewhat unusual St.

Mammals 173