You'll need to have super-sharp vision if you want to successfully spot the small frog lurking among the fallen leaves in this image - and you have just 10 seconds to do it

If you're looking for a way to sharpen your observation skills, this tricky brainteaser could be exactly what you need. Keeping your brain active is just as important as maintaining a fit and healthy body. The best way to give your mind the workout it needs is by challenging yourself with puzzles , just like this one.

This brainteaser asks you to find a small frog hiding among a pile of fallen leaves. The concept may sound simple, but it's more complex than it appears. While the fallen leaves in the image are brown, the frog isn't the bright green that you might be expecting. Instead, it's a brown wood frog, m

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