In pictures: The over-harvesting of amphibians
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Rana chensinensis is declining steeply in some areas; a study in Heilongjiang found that the annual catch fell by 99% between 1971 and 1986. The main reason is traditional medicine.

Oil made from the female frog's oviduct is believed to be a tonic to the kidneys and lungs, and to cure respiratory ailments. Image: KFBG

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