Cats are particularly active at dawn and dusk, because in low light environment, the number of visual cells when they see things is 6 ~ 8 times that of humans, while humans can see more scenery in the dark environment where they can hardly see things.

During the day, the cat's close observation vision will be slightly weakened. Only the cat's eye within 14 cm can see clearly the objects that can be seen clearly by human eyes within 25 cm.

Cats are more nearsighted than people. We can clearly see things beyond 30 meters, and cats can only see objects within 6 meters. The cat's eye sees a more blurred vision than the world in human eyes, so the cat may not see the whole city clearly.

Changes of cat's eye

Cats' pupils are very elastic and contract with the intensity of light. The pupil of a cat's eyes changes according to the intensity of light during the day. The bright light during the day will hurt the cat's eyes, so the cat's pupils will shrink. At night, in order to see clearly, cats will dilate their pupils and let more light into their eyes.

Cats' eyes are jujube-shaped in the morning.

Cats' eyes are slanted at noon or under strong light. At this time, the light is particularly strong, and the cat's pupils are narrowed, showing a line effect.

A cat's eyes are round at night. When the light is weak at night, the pupil is completely enlarged and becomes round or oval.