Did you know that you can tell by the dilation of a cat's eye what they are feeling at the moment? If they have wide pupils their emotions are heightened with excitement or fear, whereas a narrow pupil is usually a sign of danger. Who knew? I didn't. Although, the easier way to know their feelings is with their tail, but that's another Fun Facts Friday.

Now onto the color of their eyes which is spectacular, like this cat's eye. It's all about the amount of melanin produced by the iris cells, called melanocyte. The more produced, the darker the eyes will be but they will never be truly brown or black. The compilation of colors is copper, gold, yellow, green and blue. Blue-eyed cats do not have any melanin in them and all kittens are born blue-eyed. A cat's eye color doesn't change until 4 to 6 weeks old and are fully matured in a few months.

The eye gene for the color in their eyes is not controlled by the same gene for the fur color, however, a white cat will have blue eyes and that is because the white fur gene is the most dominant and kicks the other color genes aside.

After their eyes have fully matured in color and you see that they have changed, it's best to seek a vet. If it changes to orange, there is some inflammation (or it’s possessed). Either way, it's good to stare into your fur ball's eyes and get lost in their beauty.