Adder
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'Stay away from adders', walkers urged

30 May 2012 Last updated at 07:26 BST

People out enjoying the countryside are being urged to keep away from adders, the only venomous snake native to Britain.

The Health Protection Agency says it has received nearly 200 calls in the last two years from people who say they have been bitten by an adder.

The BBC's Louise Hubball reports.