Your favourite felines have mesmerizingly colourful eyes, from the brightest blues to stunning greens, vivid oranges to drool-worthy coppers. However, do you know which colours they themselves can see? A few facts before we dive in. In comparison to their human companions, cats are nearsighted and have 10 times fewer cone cells in their eyes. Cones and rods are two types of photoreceptor cells in the retina, which convert light rays into electrical signals that...