Cats can see when the lights are turned off at night. There is a layer of reflective film in the cat's eyeball. In a dark environment, as long as there is a light source, no matter how weak the light source is, the cat can reflect the light through the reflective film of the eyeball to produce a ray of light. Therefore, it is better for humans to look at cats at night. Eyes will glow. In fact, cats cannot see in a completely dark environment without any light source.

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A cat’s night vision ability depends on a substance called taurine. If the cat’s body lacks taurine, the cat’s night vision ability will be reduced. Will be affected, and mice and fish contain a large amount of taurine in their bodies, so cats will prey on mice and fish. Owners also need to pay attention to supplementing taurine to cats.