LONDON — In turbulent political times, stability comes with four legs, whiskers and a fondness for napping.
Larry the cat celebrates 15 years on Sunday as the British government's official rodent-catcher and unofficial first feline, a reassuring presence who has served under six prime ministers. Sometimes it seems like they have served under him.
''Larry the cat's approval ratings will be very high,'' said Philip Howell, a Cambridge University professor who has studied the history of human-animal relations. ''And prime ministers tend not to hit those numbers.
"He represents stability, and that's at a premium."
The gray-and-white tabby's rags-to-riches story has taken him from stray on the streets to Britain's seat of power, 10 Downing St., where he bears the official title Chief Mouser to the Cabinet Office.
Adopted from London's Battersea Dogs and Cats Home by then-Prime Minister David Cameron, Larry entered Downing Street on Feb. 15, 2011. According to a profile on the U.K. government website, his duties include ''greeting guests to the house, inspecting security defenses and testing antique furniture for napping quality.''
Larry roams freely and has a knack for upstaging world leaders arriving at 10 Downing St.'s famous black door, to the delight of news photographers.
''He's great at photo-bombing,'' said Justin Ng, a freelance photographer who has come to know Larry well over the years. ''If there's a foreign leader that's about to visit then we know he'll just come out at the exact moment that meet-and-greet is about to happen.''