It’s not as simple as it looks. You might see one and the answer seems so simple to you but when you find out what the answer actually is, you wonder how you could have fallen so far from the mark. Can you spot the odd dog in this picture?

That is the case with this puzzle, and it is stumping people with its simplicity. Set a timer for 30 seconds, scroll down, and see how long it takes you to spot all the odd ones out.IQ, short for intelligence quotient, is a measure of a person’s reasoning ability.

If you solve this in 30 seconds that means that you have a high IQ. IQ tests begin to assess this by measuring short- and long-term memory. They also measure how well people can solve puzzles and recall information they’ve heard — and how quickly.