It is normal for a cat’s eyes not to glow at night, because the cat’s eyes themselves do not emit light, but there is a layer of reflective tissue on the retina of the cat’s eyes. When light shines on the cat’s eyes, the eyes will reflect the light, so it will When there is light, the cat's eyes will not glow if there is no light, so when it is too dark at night or there is no light, the cat's eyes will not glow.