Only those with 'razor sharp' vision can spot second animal in tricky optical illusion

An optical illusion is set to challenge your brain as it invites you to find another hidden within the image of a .

Puzzles and are an excellent way to stimulate your mind and there's nothing quite like the satisfaction of solving a tricky quiz or cracking a difficult puzzle once in a while. So if you're in the mood for a mental workout today it could be worth trying this .

It is thought that only those with a reasonably high IQ can spot the second 'horse' in this perplexing image. Ready to give it a go?

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Your task is to locate the second hidden animal within the image of a brown and white horse with distinctive markings. The trick to solving this puzzle is to look quickly but also pay close attention to every minor detail, reports .

This image tests both your eyesight and quick-thinking abilities. You have 10 seconds to solve this - did you manage it? If you're still struggling, scroll down for the answer and explanation - but consider this a spoiler warning. While this crafty puzzle asks you to identify an animal, instead of its shape, you might see some large letters. Right at the horse's rear end, there's an 'h', in the middle of the animal, there's an 'o', 'r' and 's' - and finally, an 'e' next to the horse's head.

The letters spell out 'horse'. Did you crack the puzzle?

If you're on the hunt for more mind-boggling puzzles, there's a plethora to pick from. For those who are numerically inclined, solving will reportedly put you in the top 2% of the population. Some optical illusions even purport to reveal hidden aspects of your personality. One perplexing piece of art can allegedly pinpoint a person's 'true' character trait based on in a silhouetted image.

A 2021 study suggested that the “logic stress and limit stress” generated during brain games positively affects attention and cognitive function. The study explained: “These two types of stress improve cognitive abilities such as attention, concentration, and problem-solving by activating the brain’s frontal lobe.” If you found this puzzle difficult then don’t worry! Practice makes perfect, so the next time you come to a puzzle like this your brain will be sharper and ready to give it a go.