Why do cat’s eyes change three times a day?

Any animal can adapt to different light by changing the size of its pupils, especially cats. It is observed that the sphincter in the cat pupil has a very strong contractile ability and is very sensitive to light. Therefore, they can adjust the size of the pupil well under different light. For example, under the irradiation of strong light during the day, their pupils can shrink very small, just like a line; In the morning or dusk, their pupils will become jujube shaped; At night, their pupils can be opened very large, like the moon on the 15th, round and bright. In short, no matter how the light changes, cats can adjust the size of their pupils in time to make themselves see more clearly.

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