Dog’s eyes do not glow at night. We see that dog’s eyes are bright at night. This is mainly caused by the dog’s eye imaging system. When the dog’s eyes are imaged at night, they radiate light to the retina. It looks like it's shining.

Dogs’ eyes are different from those of humans. Their eyeballs have a reflective layer. Even in the presence of weak light, their eyes can reflect light. What we see in dog eyes The light is not emitted by their eyes, but reflected from the outside world.

Animals with this kind of eyes generally have strong nocturnal abilities. They can distinguish objects with tiny lights, and from the outside it seems like their eyes are glowing. Most of the animals with this kind of eyes are nocturnal animals, including wolves, cats, tigers, leopards, owls, etc.