Some cats have similar appearance characteristics, while some cats are very unique. Siamese cats are a very special kind of cats, especially the black parts of their bodies. The most special thing is that the black color of Siamese cats will Getting darker, why do Siamese cats turn black?

The fundamental reason why Siamese cats are getting darker and darker is that one of its own genes has mutated. This gene is specifically responsible for the synthesis of tyrosinase, and the role of tyrosinase is to promote the synthesis of melanin and pigments. deposition.

The activity of tyrosinase affects the synthesis of melanin. The higher the activity, the more and faster the synthesis will be. This tyrosinase only works stably in cold temperatures, so Siamese cats look darker and darker when the weather is cold.

But not all the Siamese cat’s hair will turn black. For example, its face and tail are darker. The hair on other parts of the cat is not affected much and is not very black. Only when the weather gets cold, They will become darker and darker.

In addition to Siamese cats, the key-colored Ragdoll cats, which are related to them, will also have darker and darker fur on the key-colored parts of their bodies as the temperature drops.