First, the cat's eyes are sensitive to light. Cats are actually a very magical creature. People who often keep cats may find that during the day, especially at noon, if there is enough sunshine around them, cats' eyes will generally narrow into a crack. And at night, the cat's eyes will soon become round. This reflects the miracle of nature. Cats have the ability to protect their eyes. Their eyes are very sensitive to light and will automatically adjust the size of their pupils because of the change of light.
Second, the cat's pupil sphincter has strong flexibility. The cat's eyes can change according to the light, because its pupil sphincter has strong flexibility. When the light is strong, the pupil can quickly shrink very small, like a line, and when the light is weak, the pupil slowly expands. When it is completely dark, the cat's eyes will be round. Compared with humans, the cat's pupillary sphincter is more flexible, and the sensitive nerves inside the eyes are many times more developed than humans, and the ability to respond to light is also more sensitive than humans.
Third, natural selection and evolution cats use pupil contraction to protect their eyes, which is actually a means to protect themselves. They do this to prevent glare and heat from burning the retina under the glare. This is actually the result of natural selection. Cat's eyesight is not very good, which is equivalent to human myopia. If cats don't protect their eyes, it's hard for them to catch their prey clearly.
Therefore, friends who love to shoot pets, when you shoot a cat, you can try to dim the light and make the cat's pupil round, which will look cute. Dear readers, do you understand?