Question

why the cat eye twinkle in night​

Answer 1

Answer:

light reflects on cats eye

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Answer 2

Answer:

Dogs, cats, and deer have blood, and their eyes don't look like vampire eyes. Their eyes glow because of a layer called the tapetum lucidum just behind the retina. This layer reflects light because that's exactly what it's meant to do. Cats, dogs, deer, and other nocturnal animals have good night vision because whatever the photo-receptor cells in their retina doesn't catch, hits the tapetum lucidum and takes a second pass at the retina again. They get more photons from the same scene.

Explanation:

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