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Playing dead is a lively topic.

I am amazed that "Why Play Dead?" (SN: 10/28/06, p. 280) concluded that "Scientists have a long way to go to explain why" prey animals play dead. As a veterinarian, I have learned that there are separate centers in the brain dealing with predatory behavior and with hunger. The effect seems to be that predatory behavior, by itself, is satisfying, even fun. It's solidly established that a moving-away object (ball, rabbit, child) can prompt predatory behavior (dog chases). Freeze behavior is well established as a last-resort, genetic strategy in all kinds of prey animals. If the predator is just out for fun, it is at least more likely to look elsewhere for kicks if the prey is "frozen." D.B. CAMERON, NEVADA CITY, CA,

I have noticed that chipmunks wiggle and hop after being swatted by our cat. One managed to hop near our woodpile, and suddenly it darted to safety inside. I guess this is protective behavior, but why the cats lose interest after the very active behavior begins, I don't know. DOUG STONE, HARTFORD, CONN.

You've probably received a number of references to the motto of the Possum Lodge on the Canadian Broadcasting Corporation's Red Green Show: "Quando omni flunkus moritati." (When all else fails, play dead.) MARSHALL BUTLER, SEATTLE, WASH.
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Title Annotation:LETTERS
Author:Butler, Marshall
Publication:Science News
Article Type:Letter to the editor
Date:Dec 23, 2006
Words:215
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