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Old May 14, 2000, 06:45 PM   #39
Art Eatman
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Join Date: November 13, 1998
Location: Terlingua, TX, USA
Posts: 22,467
Well, the rattler--or any pit viper--zeroes in on heat. Their two heat-seeking pits function as do our eyes, providing a sort of depth perception.

A gun-barrel, being probably warmer than the air, gives them a heat source to zero in on.

An instance where a survival mechanism can be contra-survival.

, Art
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