Grey Cat With ‘Greenest Eyes in the World’ Belongs in the Emerald City originally appeared on Parade Pets.

Purr-fection is all in the eyes. The breathtakingly beautiful cat has only been on Instagram since June 2015, and his head-turning looks have already caught the attention of over 285,000 followers ...

Animals with blue eyes are a rare occurrence in nature due to being linked to recessive genetics, mutations, and specific genes. Despite that, many species still have beautifully rich blue eyes.

Cat eye color is determined by the amount and distribution of melanin in the iris (the colored part of the eye). While brown eyes have a lot of melanin, blue eyes contain very little.

Like most blue animals, Russian blues are really bluish gray. Silvery tips on their plush coats make them shimmer in the sunlight. The silvery coat sets off their striking green eyes.