How we see the world

What a human sees - sharp and coloured

We see the world as we are, not as the world is. That's because no creature sees the whole world. Each creature, whether animal or human, sees what is important to it.

What a cat sees - less colour slightly blurred

So we don't need to see colour like you humans do. You need to tell if the corn is yellow and therefore ripe. We just need to see if there are any mice moving around among the corn.

The other reason why we don't see colour like you do, is because we are designed to be twilight hunters. Our eyes specialise in low light, where there isn't much colour anyway. They also specialise in motion. If something moves, we notice it. If it stays very very still, like a mouse freezing, it's more difficult for us to see it.

Our vision is a bit narrower and more blurry too. 

Twilight is our world.