Dogs have night vision. Dogs' vision at night is five times that of humans. Like cats, when there is weak light at night, their pupils will dilate to collect light, and there are many photoreceptor cells in the dog's retina, which can respond to weak light. There is also a layer of reflective tissue in their eyeballs that can reflect light, allowing dogs to see objects clearly in weak light.

Why do dogs’ eyes glow at night?

1. The reason why dogs’ eyes glow at night is mainly due to the reflection of light in the environment, rather than the fact that the dog’s eyes themselves glow. This is a rather special behavior of dogs.

2. If you find that your dog’s eyes emit green light or glaucoma under normal circumstances, it is most likely caused by glaucoma. It is recommended to take it to a pet eye hospital in time for further examination and treatment.