
A Battersea Cats & Dogs Home staff drops off Larry the cat to 10 Downing Street in London, Britain, 15 February 2011. The Prime Minister David Cameron is thought to have chosen him after speaking to his two children Nancy and Arthur. Rats have recently caused some concern to Downing Street residents. EPA/ANDY RAINepa A Battersea Cats & Dogs Home staff drops off Larry the cat to 10 Downing Street in London, Britain, 15 February 2011. The Prime Minister David Cameron is thought to have chosen him after speaking to his two children Nancy and Arthur. Rats have recently caused some concern to Downing Street residents. EPA/ANDY RAIN

A Battersea Cats & Dogs Home staff drops off Larry the cat to 10 Downing Street in London, Britain, 15 February 2011. The Prime Minister David Cameron is thought to have chosen him after speaking to his two children Nancy and Arthur. Rats have recently caused some concern to Downing Street residents. EPA/ANDY RAINepa A Battersea Cats & Dogs Home staff drops off Larry the cat to 10 Downing Street in London, Britain, 15 February 2011. The Prime Minister David Cameron is thought to have chosen him after speaking to his two children Nancy and Arthur. Rats have recently caused some concern to Downing Street residents. EPA/ANDY RAIN

A photo released 15 February 2011 by London's Battersea Dogs and Cats Home of Larry, a four year old cat who has been recruited by 10 Downing Street - residence of the Prime Minister David Cameron - to tackle a rat problem. The former stray made the short journey from the stray cats home across the River Thames and taken in through the front down of No 10. EPA/HO EDITORIAL USE ONLY NO SALES