Only 1% of people can spot the hidden animal in this picture... are you one of them?

Today, we'd like to challenge you to spot the animal that is hidden in this image of black and white lines. Warning: this test is a lot more complicated than it looks. Indeed, it takes most people a while to find the hidden animal. Only 1% of the population can see it right away, so... are you part of this elite group?

A confusing optical illusion

Have you heard of the McCollough effect? Well, this effect, which was discovered in 1995, is a phenomenon of visual perception in which colourless lines appear coloured.

But back to our picture, when you look at these black and white lines, you feel your perception changing. If the lines turn red and green, you'll eventually start to see everything in pink. On the other hand, if you see pink, green, and red dots, it's because you're focusing on the vertical lines. Disturbing, right?

How do they work?

This optical illusion actually works because of the over-stimulation of the cells that make up the photoreceptors in your eyes. As soon as you look away, the brain will then interpret the signals it has received and compensate by inverting the colours, meaning the negative photo almost becomes a colour one.

Scientists have only been able to figure out the science for a few optical illusions, but there is still a vast number of illusions that we haven't been able to decode out. All we know, is that there is a complex relationship between the eye and the brain, and there's a lot of confusion between the two as well. Somethings are better left, unexplained. The mystery is fascinating enough, isn't it?

See for yourself! Check out the video above to see the animal that's hidden in the photo!