Animals like mice contain a substance called taurine in their bodies that can improve night vision, but cats, which are always good at moving at night, do not have this substance. If the cat’s body is not supplemented with taurine for a long time, it will Then, the cat will lose the ability to see at night. In order to supplement "nutrition", ingest taurine, and retain its nocturnal habit, cats must capture a large number of mice. After repeated experimental analysis, scientists found that fish also contains a large amount of taurine, which is why cats love to eat fish.

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Taurine can well improve the night vision ability of cats, and also promotes the photoreceptor cells in the cat’s retina. Scientists have found that taurine not only has this effect on cats, but can also improve the night vision of most mammals.