BORIS Johnson barked, “Someone shoot that f***ing dog” after his pet Dilyn wrecked antique furniture.
The Jack Russell-cross left the Prime Minister with a four-figure bill after also chewing books and “messing on a floor” at Chequers.
He swore as Dilyn, who was rescued as a pup, dashed between his legs with a tome in his mouth in a “Laurel and Hardy-style farce”.
But Boris, 56, avoided being in the doghouse — as animal-loving fiancée Carrie Symonds, 32, was not present.
Dilyn has been marking his territory in No10 too, most recently by urinating on the handbag of a senior aide.
An insider said of the Chequers incident: “I was at a meeting when Dilyn darted under the PM’s feet with an old book in its mouth.
“He shouted, ‘For God’s sake, I’m going to get another £1,000 repair bill. Someone please shoot that f***ing dog’. I don’t think he meant it literally.”
Dilyn is unpopular with staff at the country pile in Buckinghamshire where Boris and Carrie spend weekends. A source said: “He causes havoc, gnawing at the furniture and soiling carpets.”
Carrie was apparently “very angry” by the reaction of aide Katy Lam, whose bag the pooch cocked a leg over in London.
A pal of Miss Lam said: “Katy did nothing wrong. She did what any woman would do when a dog is about to relieve itself on her handbag.”
Miss Lam has quit No 10 but her departure was not connected. Downing Street has declined to comment.