YOU probably have excellent vision if you can spot the reindeer hidden in this mind-bending optical illusion - especially if you can do it in under ten seconds.

       When you first glance at the image you might notice a few dogs hidden amongst the festive scene.

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       Can you spot the sneaky hidden reindeer at the Christmas market?

       But these are easy to find - the real challenge is locating the reindeer.

       And the festive challenge might mean you have 20/20 vision if you can find him in just nine seconds.

       In the picture, dozens of people can be seen enjoying a festive Christmas market.

       They're wondering between stalls with family, friends and pets - and someone is even dragging a tree home with them.

       The colourful puzzle has been created by Christmas Tree World in the run up to Christmas.

       They say the average time it takes someone to spot the reindeer is 66 seconds.

       Do you think you have what it takes to set a new record?

       Try focusing on one of the huts in the market scene.

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       The reindeer's colour means he blends in fairly well to the wood.

       And it might not be all of his body that's visible in the picture.

       So keep your eyes peeled and look out for a little reindeer head, poking out of an unexpected spot.

       And if you still can't see him, the answer is below.

       If you did manage to spot the reindeer, maybe it's time for a fresh festive challenge.

       Can you spot Rudolph in this fresh puzzle below?

       Thanks to his bright red nose, he should stand out from the other reindeer with yellow, green, pink, orange and blue noses.

       But with Christmas trees and presents dotted around the snowy landscape, the red honker is even more tricky to find.

       Devised by Savoo, the brainteaser is said to take puzzlers around 30-seconds to spot - but can you get it any faster?

       If you did - you probably have excellent vision.

       And if not, the answer is below.

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       If you didn't spot the reindeer at the market, the answer is above 4

       Can you spot Rudolph in amongst these colourful reindeer? Credit: Savoo 4

       Don't worry if you didn't get here - he's hiding in the bottom right corner