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LONDON — Larry the cat, the UK's most famous feline, marks 15 years on Sunday as the country's chief mouser patrolling the corridors of power around number 10 Downing Street.
Here are four things to know about the purr-fect puss who over the years has charmed his way into the hearts of some of the world's top politicians.
Humble roots

British Prime Minister Keir Starmer looks at Larry the cat, Chief Mouser to the Cabinet Office, as he steps out from 10 Downing Street to welcome President of Cyprus, Nikos Christodoulides (not pictured) ahead of their meeting in London, United Kingdom on May 21, 2025.
In January, he even sent a photographer stumbling on the red carpet after darting unexpectedly between his legs during a visit by Poland's president.
Cat-fluencer
A whiskered influencer, Larry also boasts an X account @Number10cat followed by more than 877,500 fans.
Run by an anonymous user, Larry grumbles about getting caught in the rain and sometimes takes catty swipes at politicians, notably UK Reform and the administration of US President Donald Trump.
His first months "in office" even inspired a book, "The Larry Diaries", published in 2011.
Larry now shares the No. 10 residence with JoJo and Prince, the Starmer family cats.
Prince, a Siberian, joined the household in 2024 after "negotiations" with Starmer's children -- who had wanted a German Shepherd dog.
But there was a problem: "the only door out of our new flat is bomb proof," Starmer told the BBC in 2024. "Therefore, getting a cat flap is proving a little bit difficult."
Larry's fans can relax though: he is considered a permanent civil servant, which means he gets to stay at Downing Street for good. Unlike prime ministers.
Famous felines
Larry is not alone in being a feline companion to politicians.
On Saturday came sad news that Palmerston, a black-and-white cat, once mouser to the Foreign Office and "Diplocat extraordinaire", had passed away in Bermuda where he retired in 2020.
"Farewell old friend x," Larry posted on his X account, brushing aside rumours of rivalry between the pair.
Under former US president Bill Clinton, the black-and-white cat Socks took up residence in the White House from 1993 to 2001.
Once a stray, Socks became the star of several books and was often featured by the UK cartoonist Steve Bell in his daily comic strips.
And in Belgium, a rescue cat named Maximus has shot to social media stardom as the bewhiskered sidekick and PR weapon of Prime Minister Bart De Wever.