Ever wonder what your cat is watching out the window? Or how having eyes on the sides of its head changes the world for a horse? And what would life be like if we couldn't see the whole rainbow or - even stranger - could see in 4 or 5 colours instead of only 3? Eye Spy takes children on a whirlwind tour of how eyes work and lets them lift the flaps to find out how animals as different as dogs, owls and chameleons see the same scene. It's a truly eye-opening experience guaranteed to fuel and satisfy the curiosity of any animal-lover.