Once almost gone from Illinois, river otters are now back in big numbers.
Illinois Dept. of Natural Resources
November 26, 2012 The state's otter population has exploded from 100 just a few decades ago to more than 15,000. They're eating their fill at ponds and fish farms, and are expected to soon double again in population if left unchecked. That's led Illinois to open the first otter trapping season in 83 years.
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