Larry the Cat: Downing Street’s Chief Mouser Celebrates 15 Years

Larry the Cat Celebrates 15 Years as Downing Street’s Chief Mouser

Larry the cat marked a milestone on February 15, 2026, celebrating 15 years as the “Chief Mouser” to the Cabinet Office at 10 Downing Street. The feline, who has become a familiar face in British politics, reached the anniversary of his arrival at the Prime Minister’s official residence, where his presence is now a tradition.

While his title may sound symbolic, the so-called “Chief Mouser” has been one of the most consistent residents at 10 Downing Street for years.

When Did Larry Arrive at Downing Street?

Larry arrived on February 15, 2011, when then-Prime Minister David Cameron adopted him from Battersea Dogs and Cats Home in London. The decision came after a rodent problem was identified at the building.

Since then, Larry has remained an official resident and has witnessed the tenures of six British Prime Ministers: David Cameron, Theresa May, Boris Johnson, Liz Truss, Rishi Sunak, and Keir Starmer.

More Than Just an Official Cat

In addition to his role as a pest controller, his official duties include “greeting guests to the house, inspecting security defenses and testing antique furniture,” according to his caretakers.

In 2019, during Donald Trump’s official visit, Larry appeared during a photo session and was captured resting under “The Beast,” the U.S. President’s armored vehicle.

Currently, at 19 years old, the “Chief Mouser” is reportedly in good health, according to his caretakers. Last year, he was seen hunting mice, confirming he remains active in his unique role within the most famous residence in Great Britain.

Larry’s story is a rags-to-riches tale, transforming from a stray on the streets to a fixture at the heart of British power. He has become known for greeting dignitaries and lounging in the spotlight, offering a sense of continuity through years of political change.

“Larry the cat’s approval ratings will be very high,” said Philip Howell, a Cambridge University professor who studies human-animal relations. “And prime ministers tend not to hit those numbers.” Howell added that Larry represents stability, “and that’s at a premium.”

Photographer Justin Ng, who has frequently photographed Larry over the years, noted the cat’s knack for timing. “He’s great at photo-bombing,” Ng said. “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.”

Larry’s presence at 10 Downing Street offers a reassuring constant in a world of shifting political landscapes. His 15-year anniversary is a testament to his enduring appeal and his unique position as Britain’s unofficial first feline.