The experts compared the winning picture to pictures of Ossian, a tame wolf that lives at a zoological park near Madrid called Canada Real.
"You can see several very distinctive markings and the experts all agreed that, yes, it's the same wolf," said Mr Carwardine.
Wildlife photographer Mark Carwardine was one of the competition judges. He told BBC News that this was the first time in its 46 year history that there would not be a winner.
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