Thames Valley Police, with assistance of Cambridgeshire Police, returned 'Bentley' to his owner this morning.
Police have also taken a 25 year old male into custody after having arrested him on suspicion of theft.
The Yorkshire terrier was stolen from outside the Londis convenience store on Middleton Road in the Grimsbury community of town just over a week ago.
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Veronika Uhrova had only just walked into the shop for a few minutes when she returned to the shopfront to find her five-year-old Yorkshire terrier, 'Bentley' gone.
He was taken at around 5pm on Tuesday May 5.
Veronika reported the theft to Thames Valley Police and to the Dog Lost group, the UK's largest lost and found dog service.
She said: "He's not just a dog, he's part of the family."
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