A cat’s pupils will enlarge or shrink depending on the intensity of the light. During the day, when the light is strong, the cat’s pupils will shrink. At night, when the light is dim, the cat’s pupils will enlarge. Pupils also dilate when a cat feels threatened, and narrow when the cat tries to fight back.

Tip:

The pupillary sphincter of a cat’s eyes has a very strong contraction ability. Cats can adjust their pupils accordingly under different lights. If the cat stares directly at its owner, it means that the cat feels threatened. Only when the cat blinks slowly at the owner is the cat conveying love to the owner.