You'll curse yourself for not thinking of the genius answer behind this tricky brainteaser. If one of your New Year's Resolutions is to improve your intelligence, this fiendish river-themed puzzle is definitely one for you. With just 12 seconds on the clock, you'll need a super high IQ and the ability to work well under pressure and not flap. An imaginative brain that can think outside the box will also be your best friend here (not that we're giving you any clues)...
If you tend to turn your nose up at brainteasers, it's time you gave them a chance. They're not just a silly way to pass the time or flex your intelligence; research has actually shown they can have a positive impact on the central nervous system - resulting in improved cognitive abilities such as better concentration levels.
"A man stands on one side of a river, his dog is on the other," the riddle reads. "The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?". Before you try to be funny: No, the dog cannot fly. Struggling a little with this one? If you can't solve it under the time constraint keep going and see how long it takes you before everything becomes clear. Then, scroll down to the bottom of the article to find the answer.
Want to avoid the doom and gloom? Get the latest positive news sent straight to your inbox with our Bright Stuff Newsletter. If that tricky riddle didn't even make you break a sweat, it's clear we need to ramp things up a little. So, below are 10 questions that may look like your bog standard pub quiz format. However, each Q has been strategically designed to trick you - so you'll need a razor-sharp mind to avoid any silly mistakes.