What are panda's dark circles?

1. panda's dark circles: pandas live in high altitude areas, often with long winters and heavy snowfall. In the process of evolution, dark circles appeared in order to protect visual organs;

2. In order to ensure that chewing organs, olfactory organs, auditory organs and motor organs are not frostbitten, their fur color changes from light to dark, absorbing sunlight and reducing heat loss;

Panda's real eyes are very small. Because of living in the secluded environment of dense forests and bamboos in the mountains for a long time, the field of vision is limited. The dark circles outside the eyes make the eyes look magnified countless times. If other animals look, they can't see the size of real eyes clearly.

4. Dark circles enable pandas to move after nightfall, because they have cat-like eyes and can adjust the change of light at night;

5, the whole body is black and white, shuttling in the snowy environment of alpine forests, adapting to the natural environment, and its clothes become protective colors.