Last updated at 05:36

100 endangered water voles released, what's so special about them?

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One hundred water voles are being released into a lake in the Yorkshire Dales to help boost their numbers.

There used to be loads of them in Malham Tarn in the 1960s, but they were wiped out by mink.

They're now one of the most endangered mammals in the country.

Jenny looks at what's so special about water voles.