While the rate of congenital heterochromia iridis in humans is approximately six out of a 1,000, ... and felines with it even have a moniker: odd-eyed cats. Paul Schadler/flickr/CC BY 2.0.

Some cats, however, are born with eyes that are so pretty it's almost unfair. Recently, one Maine Coon cat mom took to TikTok ...

White cats with heterochromia — one blue eye and one of another color — may also experience partial deafness. For owners of such cats, these challenges require special care.

Less than 200,000 people in the United States have heterochromia. Some types of heterochromia are common in dogs, cats, and horses. There are three main types of heterochromia of the eye.

Van cat is an endemic breed that emerged in the surroundings of Van Lake, which is now the territory of Turkey. ... Heterochromia is not the dominating feature of the breed.

The newest internet sensation, Sansa is a six-year-old snowy cat from New York City who was born with heterochromia, a rare condition that causes her to have different-colored eyes.

Akasha the Sphynx cat has heterochromia, a condition which means her eyes are two different colors. Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013. Her work ...