Who is San San? The 3-coloured eye cat from China become viral sensation with a "rare condition"

San San the three coloured eye cat from China. (Image: X/@Dailymeoww1)

• San San, a cat from China, has rare sectoral heterochromia.
• The cat's eyes have three different colors, making him unique.
• This rare condition is harmless and has made San San an internet star.

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Cats are the cute and most fierce animal who is love by every human being. They are known for their royal personality and connection to big cats. A cat that goes by the name "San San" from China is getting famous on the internet.

This cat is suffering for a rare condition known as heterochromia. Due to this condition, San San have three different colors. Scientists revealed more about this rare condition.

Who Is San San?

San San is a domestic cat living in China. It looks like a regular house cat at first glance. But this has earned it fame on social media platforms across the globe.

Videos and photos of the cat have quickly gone viral, attracting millions of views and likes. San San suffers from a rare condition called heterochromia. This cat is getting famous for its different eye colours.

A cat named San-San from China has become the new internet sensation due to his rare heterochromia , his eyes have three different colors.

The cat with the most beautiful eyes I’ve ever seen 😍 pic.twitter.com/XdmijA6URL — DailyMeow (@Dailymeoww1) March 9, 2026

Which Rare Condition Does This Cat Have?

San San suffers from a rare condition called heterochromia. This mutation makes the eyes colored differently. The fact that San San is a person with three different coloured eyes is what makes him so unique. It is a very rare type of heterochromia. The condition makes the cat look incredible and spectacular.

What Occurs in this Rare Condition?

Heterochromia is a condition whereby there is some difference in quantity or distribution of melanin in one or both eyes. Heterochromia may be:

• Complete heterochromia - the eyes are as different in color as they can be.
• Sectoral heterochromia - one eye has more than one color.

San San has sectoral heterochromia which manifests with more than one eye colour.

What Species is San San?

San San belongs to the species Felis catus, commonly known as the domestic cat. Heterochromia is rare in cats but is more frequently observed in some breeds, such as Turkish Van, Turkish Angora and Japanese Bobtail cats.

How Scientists See This Condition in San San?

Scientists said San San’s heterochromia as a fascinating genetic variation. It has no negative effects on the cat.

This condition provides valuable insight into how genes control pigmentation and how genetic mutations can manifest in animals. Heterochromia is also sometimes seen in humans and other animals.

Internet Sensation: Is San San in Danger?

Due to its three eye colour, San San has quickly become an internet celebrity. Fortunately, San San’s condition is completely harmless and there is no risk to its health.

The eye pattern gives the cat a striking and unusual appearance. This cat stands out from other cats and earned the title of “internet superstar.”