My grandmother has a lovely kitten. It has a pair of big round eyes like glass balls, a small nose, a long tail and a white fur coat without any noise. It's so cute. I named it "Little Pudding".

One sunny noon, I was playing with a small pudding. Suddenly, I found that the pupil of the little pudding became a thin crack. Hey, what happened? Mingming's eyes were round last night I asked my grandmother out of curiosity, and she said she didn't know.

I went home and looked it up on the Internet. It turns out that the cat's eye will become smaller in strong light. At the smallest time, it can become a crack to reduce the entry of pipes and protect eyes from strong light. When the light is weak at night, the pupil can be enlarged to absorb more light. In order to see objects more clearly, this is also the reason why cats have much better eyesight at night than people. No wonder pudding can see where the mouse is after turning off the lights at night.

Through this observation of the little pudding, I decided to learn more about animals and their mysteries in the future.