He's one cool cat: Jimmy's party trick gets a big thumbs-up

Jimmy the cat has an amazing party trick.

In a YouTube video a woman's voice can be heard saying: 'Hi Jimmy. Can you give me a thumbs-up, Jimmy?'

And then the woman and a man are heard laughing as Jimmy obliges and sticks his 'thumb' up.

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Jimmy the cat stars in a YouTube video in which a woman with a British accent asks him to give her the thumbs up

The description attached to the video says: 'Jimmy is a polydactyl cat. He's probably the laziest cat in the world but he's also super clever and has thumbs. And he's got a great party trick :-)'

Jimmy has polydactyly, which means he has extra digits, a physical anomaly that's sometimes caused by a genetic defect.

Polydactyl cats are fairly common in some parts of New England in the U.S. and they are sometimes called Hemingway cats, because the writer Ernest Hemingway grew to love them after being given a six-toed cat.

The Guinness World Record holder for the cat with the most digits is Jake, a cat from Ontario, Canada, which has 27 digits. The unofficial record goes to Bandit, a 29-toed cat from Hoboken, U.S. Bandit is owned by Beth Stuart, who is in the process of applying for recognition.