Everyone has taken a walk in the dark and has suddenly seen a pair of eyes watching and following them move. Also, at some point in time everybody has taken a picture and wondered why their eyes are red. Thus, the concept of glowing eyes is formed.
On the other hand, a similar phenomenon with glowing eyes can be seen in humans on pictures with flash. However, human eyes glow in red and only when the flash hits them in dark environments. The eye regulates how much light goes in by contracting or expanding the pupil, thus at night
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