Although the scientists admit they don’t know for sure what’s causing the changes,they think environmental estrogens should take the blame. BPA, phthalates and other estrogenic chemicals commonly found in cosmetics, drugs, plastics, cans and pesticides have contaminated the environment, including the rivers where the otters live.

via Of Otters and Men: The Shrinking Effect of Environmental Estrogens on Reproductive Organs.

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