Even more surprising, “White cats have less melanin in their skin ... their white fur—also works on irises. The most common eye color in snowy-hued cats is greenish-yellow to gold.

Most kittens are born with blue eyes, which gradually change and reach their permanent color ... have two different colored eyes. This condition, known as heterochromia, is more common in white ...

Wild cats showcase a stunning diversity of eye colors, proving a mystery for researchers because most wild species are known to have narrow eye color schemes (usually black, brown or yellow).

The W gene, which gives white cats their coat color, can also cause abnormalities in the inner ear, leading to hearing loss.

The latter’s color (or lack thereof) is thanks to a dominate W gene. “Albino cats lack all pigmentation, whereas white cats simply have a gene that masks other colors,” Dr. Smith explains. “Albino ...