Cat eye color

1. Green: Cats in cold areas often have eyes with this color. After all, insufficient sunlight leads to insufficient melanin concentration.

2. Tsubaki color: Compared with green, Tsubaki color looks darker, just like a fusion of green and brown.

3. Blue: This color of cat eyes is mainly found in white cats and is a rare cat eye color.

4. Red: This color is mostly caused by cats suffering from "albinism" and their bodies cannot produce melanin, causing their eyes to appear this color.

5. Copper color: When the melanin reaches a very high concentration, this color will appear in the cat’s eyes.

6. Earthy yellow: More common among cats than copper-colored cat eyes are khaki cat eyes. The single-color yellow color in the pupils makes people feel close.

7. Yin and yang eyes: also called "heterochromia of the iris", it is related to congenital inheritance.