The darkening of the Siamese cat’s belly is due to the activity of tyrosinase in the body. Tyrosinase will promote the synthesis of melanin, but it can only work when the temperature is low, so it may be that Siamese cats crawl on the cold floor for a long time, causing the temperature of the belly to become lower and the activity of tyrosinase to increase. , the hair on the belly will turn black.

Tip:

The tyrosinase in Siamese cats will change with the body temperature and age of Siamese cats, so most Siamese cats When a cat is just born, the hair all over its body is white. As a Siamese cat grows, the hair color of the ears, face, limbs and other parts with lower body temperature will gradually turn black, forming what people call key colors.