Galapagos Lady Iguanas Under Study

It seems a universal truth that a females watches her weight to attract a male, but Choosy mating habits are costly to female iguanas (Hulik.com): During "a month-long mating period, particularly choosy females lost as much as 25 percent of their body weight -- far more than the 14 percent lost by the average female. The longer they spent in the company of the attractive males, the more weight they lost."

Photo of an iguana in the Galapagos thanks to ClipArt.com.

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