When does a cat have green eyes? - briefly
A cat typically has green eyes due to genetic factors, often seen in breeds like the Russian Blue or Egyptian Mau, where the color is a natural trait.
When does a cat have green eyes? - in detail
Cats can have green eyes due to a combination of genetic factors and the presence of specific pigments in their irises. The color of a cat’s eyes is determined by the amount and distribution of melanin, a pigment responsible for coloration in animals. In the case of green eyes, the iris contains a moderate amount of melanin, which interacts with light to produce the green hue. This phenomenon is particularly common in certain breeds, such as the Russian Blue, Egyptian Mau, and Norwegian Forest Cat, where green eyes are a breed standard. Kittens are typically born with blue eyes, which may change color as they mature, often settling into their permanent shade by the age of three months. The exact shade of green can vary from a pale, almost yellowish green to a deep, emerald tone, influenced by genetics and the specific distribution of melanin. Additionally, lighting conditions can affect the appearance of green eyes, making them appear brighter or darker depending on the environment. While green eyes are less common than yellow or blue eyes in cats, they are a striking and distinctive trait that adds to the unique beauty of feline companions.