Do dogs sleep with their eyes open: Dogs generally sleep with their eyes closed. Dogs sleep with their eyes closed just like humans. They will not sleep with their eyes open unless there are special circumstances. Normally, they are closed or semi-closed.

The reasons why dogs sleep with their eyes open:

1. Characteristics of individual dogs: Some dogs are different from other dogs when sleeping, they will open their eyes or roll their eyes. The owner does not need to worry, this is normal.

2. Suffering from eye diseases or other diseases, such as canine distemper and parvovirus, causing the dog to sleep with its eyes open.

3. Environment. If the dog changes its environment and the environment feels unfamiliar to the dog, the dog will sleep with its eyes open.

4. It is an illusion: when a dog sleeps, his eyes must be closed, but the eyeballs and whites of the eyes are wrapped by the developed "third eyelid". Moreover, the whites of the eyes are next to the dog's "third eyelid", and the color is very similar to the "third eyelid". It is easy for people to mistakenly think that what they are seeing is the whites of the dog's eyes, creating the illusion that the dog is sleeping with its eyes open. . And that layer of white is actually not the whites of the eyes, but the dog’s “third eyelid.”