This piece was originally published in 2017. Thumbnail: Photography by ANURAKE SINGTO-ON / Shutterstock. Tell us: Is there anything else you’d like to know about cat eye colors? Ask your questions in the comments! Because the epistatic white gene is a dominant and masks other colors, white cats are statistically more likely to have blue eyes than random-bred cats of other colors. The only exception to this rule is white cats.
Thus, a black cat like my Belladonna has pale hazel eyes, but a purebred orange Persian may have dark copper-colored eyes. Photography by iidea studio/ Shutterstock.ĭifferent genes control fur colors and cat eye colors, so the melanocytes in the fur may be much more (or less) active than those in the eyes. There is generally little relation between fur colors and cat eye colors Do fur colors have anything to do with cat eye colors? Not really. The adult eye color starts to appear between 4 and 6 weeks of age, and a kitten’s true eye color is usually apparent by the time he or she is 4 months old. As they grow, their melanocytes start to function and the true color of their eyes begins to appear. Kittens are born with blue eyes because their melanocytes haven’t started working yet. There’s a connection between melanin and kitten eyes, too All kittens start off with blue eyes. The same thing happens with blue-eyed cats: They have no pigment cells in their irises, and because the eye has a rounded shape, light refracts through that rounded surface and produces the blue eye color in cats. You know how window glass looks clear when you look straight through it, but it looks kind of blue or green around the edges? That’s because of the refraction of light through a clear surface. Photography by DONOT6_STUDIO / Shutterstock. Blue-eyed cats have no melanin in their irises This blue-eyed white cat has no melanin in her fur or her eyes. For example, the Bombay cat breed standard requires copper-colored eyes and the Tonkinese has aqua-colored eyes. Photography by Vecta / Shutterstock.īecause purebred cats are bred to meet a specific breed standard, which often includes eye color, breeders select for cats that have more intense colors or particular colors. Purebred cats tend to have more intense eye colors Bombay cat breed standards call for copper-colored eyes. For example, a cat with a medium amount of highly active melanocytes will have bright golden-yellow eyes, but a cat with a medium amount of less active melanocytes may have pale lemon-yellow eyes. When the melanin-producing cells are very active, cat eye colors will become more intense. A cat’s eye-color intensity is linked to melanocyte activity A cat with highly active melanocytes will have bright golden-yellow eyes. But cats don’t get brown or black eyes like people do the darkest color you’ll see in a cat’s eyes is a deep, rich copper.ģ. The same thing is true with cat eye colors: The more melanocytes there are in your cat’s irises, the darker their color will be.
A while back I wrote an article on the genetics of cat fur color, in which I explained that melanin plays an important role in determining how dark your cat’s fur coat will be. The pigment produced by the melanocytes is called melanin. Photography by FreeProd33 / Shutterstock.
It’s all about melanin An orange cat with copper eyes. In the stroma, those melanocytes are loosely arranged, and in the epithelium, they are more tightly packed. Both of these layers contain pigment-producing cells called melanocytes. The iris has two layers, the stroma and the epithelium. The colored area around the pupil of the eye is called the iris. When we talk about cat eye colors, we need to discuss the iris. Cat eye colors start with the iris Cat eye colors start with the iris. Check out these cool facts on cat eye colors: 1. But whatever color your cat’s eyes are, there’s an amazing story behind how they got that way. Most of the pictures I have of her, show her eyes with a golden tone. My cat Kissy had the most amazing eyes I’d ever seen: If I caught her with her eyes open on a sunny day, they were a beautiful sea-green that I could never capture in a photo.
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