Grey seal pups
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Grey seal gives birth to rare twins in Norfolk

5 December 2015 Last updated at 07:55 GMT

A grey seal has given birth to twins, which experts believe is a first for the UK.

They were born on a beach in Norfolk in the east of England and are to have their DNA tested to confirm officially that they are twins.

More than 800 pups are expected to be born at Horsey Beach before the end of January.

Watch Jenny's report to find out more.