A cat that gained 5,000 Facebook followers after making a supermarket his second home has been "signing" copies of a book about his adventures.
Ginger tom Garfield took a liking to Sainsbury's in Ely, Cambridgeshire, after the store was built on his old stomping ground.
The co-author Cate Caruth said copies of the book - What's THAT doing There? - sold out in half an hour.
Garfield "signed" his book in Ely Library with a paw-print stamp.
It was modelled on his real paw.
Garfield, now 12, first started visiting the store after it was built in 2012 on a meadow opposite the flat where he lives with owner David Willers.
His favourite spot was a sofa in the Virgin travel shop in Sainsbury's lobby, and he often tries to get into people's cars outside the store.
Fans of the cat posted photos of him at the supermarket and at one point his owner had to ask people to stop feeding him as he was becoming fat.
A Facebook page set up with photos of the cat in the supermarket has a following of more than 5,500 fans from places as far away as the United States, Canada, Australia and Russia.
A book of his adventures and misadventures has now been written by Mr Willers with Suffolk author Cate Caruth.
The title - What's THAT Doing There - refers to Garfield's reaction when a fence was erected across his favourite meadow ahead of the supermarket being built.
The book tells how Garfield was once banned from the store for scratching a customer who became a little too familiar - and many of his other adventures.
In the book he is called Garfield Abercrombie Reginald Fergusson, but as that was "far too much like hard work... everyone just called him Garfy".
"It is a little familiar of people," Garfy would always think, "but I suppose I can live with it," he says in the first chapter.
Speaking after the book signing on Saturday, author Ms Caruth said it was a "big hit."
"Garfield took it all in his stride, posing for photos with his fans and inspecting the library services with great care.
"It was non-stop for two hours and we sold out of books in half an hour" she said.