Why do dogs wake up easily?

Dogs are animals with sensitive hearing and sense of smell

Once people or other animals approach, they will notice and show vigilance

This is They have evolved over a long period of time and are a kind of reflex in the wild environment

As for many parents taking pictures of dogs, in many cases they are familiar with the dogs and are already with them when taking pictures. , wait until the dog falls asleep before taking the photo

Another more convenient method is to use the camera to zoom in so that the lens is closer, and the person does not need to get too close to the dog