Larry the cat has been a fixture of 10 Downing Street for years now, outlasting several prime ministers in the process.
He's regularly seen patrolling outside the famous black door, accepting strokes and affection from passers-by, and has been a beacon of stability during some tumultuous times.
'Larry bridges'
A report in The Times said government officials know full well how popular the chief mouser has become - and have drawn up plans for a media blitz to announce his eventual demise.
There's no indication he's unwell, but the tabby is now 17.
The newspaper said officials will say "Larry bridges" when he dies, evoking the plan for when Queen Elizabeth II passed away dubbed Operation London Bridge.
One source said it would have to be handled "sensitively".
The prime minister's spokesperson has now been asked about it, and wasn't giving anything away.
"More details about Larry?" they were asked.
"Don't comment on Larry," was the blunt reply.