Why Siamese cats have dark paws, ears, and noses

The Delightful Mutation Behind Siamese Cats · 3:46 · Video: SciShow · Watch at the source

In short: Siamese cats possess a unique coat pattern driven by more than just genetics. This video explains how a combination of heredity, a fragile enzyme, and body heat determines where their dark pigment appears.

The distinctive coloration of Siamese cats is not determined solely by their genetic blueprint. Instead, it results from a complex interaction between their DNA and a temperature-sensitive enzyme.

Because this enzyme is fragile, the cat's body temperature plays a crucial role in its function. This leads to darker pigmentation on cooler areas of the body, such as the nose and the toe beans.

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