Cat eye color is determined by the amount and distribution of melanin in the iris (the colored part of the eye). While brown eyes have a lot of melanin, blue eyes contain very little.

Dr. Gaylord Brown, the veterinarian at D.E.L.T.A. Rescue, an animal sanctuary based in California, said in the article: "All kittens are born with blue eyes and at about 6 weeks of age they begin ...

Leo the Large is a young brown and white tabby cat. He's about 1 and half years old. He's an active, energetic boy who loves lots of attention and interaction.