An animal's eyes "glow" in the dark when a light is shined on them because of the

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Quizplus · Accepted Answer

The phenomenon of an animal's eyes glowing in the dark when light is shone on them is due to the tapetum. The tapetum is a layer of tissue located behind the retina in the eyes of many animals, including cats and dogs. It reflects light back through the retina, enhancing the animal's ability to see in low light conditions. This reflected light causes the eyes to appear to "glow" in the dark. The ciliary body, iris, and retina are not directly responsible for this phenomenon.

An Animal's Eyes "Glow" in the Dark When a Light