Thursday, 14 March 2013

Large Dogs Age Faster, Die Younger

Ker Than, ISNS Contributor
Date: 08 March 2013 Time: 04:44

(ISNS) -- Most large dog owners know they are setting themselves up for heartache because their beloved pets will die much sooner than smaller breeds.

The correlation between size and lifespan in dogs is well documented, but scientists are still unclear about the reasons behind it. Why, for example, does a 150-pound Great Dane only live for about 7 years, while the average lifespan of a 9-pound toy poodle is 14 years?

"This tradeoff has been known about for a long time, but nobody has yet investigated the underlying demographic mechanism," said Cornelia Kraus, an evolutionary biologist at the University of Göttingen in Germany.

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