An Interesting Discovery

Wikipedia:

The Chief Mouser to the Cabinet Office is the title of the official resident cat of the Prime Minister of the United Kingdom at 10 Downing Street. Only three cats, Humphrey, Sybil and Larry, have been given the title officially; other cats were given this title affectionately, usually by the British press. There has been a resident Treasury or Downing Street cat employed as a mouser and pet since the reign of Henry VIII, when Cardinal Wolsey placed his cat by his side while acting in his judicial capacity as Lord Chancellor, an office he assumed in 1515.

Larry has held the post since February 15, 2011.