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Dye cited as likely cause of otter deaths at National Zoo

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Two young otters died Thursday at the National Zoo after a routine examination.The Asian small-clawed otters had patches of fur dyed for identification purposes and received contraceptive implants, according to a zoo statement. The animals appeared to act normal after the procedure, but zookeepers later noticed that a male and female were showing signs of discomfort.“They were immediately...

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