2. Sleeping in Highly Vulnerable Positions

Sleep leaves any animal entirely defenseless against potential predators. In the wild, canines sleep curled up in a tight ball to protect their vital organs and conserve body heat. When your dog chooses to sleep stretched out on their side, or entirely upside down with their belly exposed, they are communicating complete faith in their physical environment.

A dog sleeping “belly up” or sprawled out in the “superman” position knows they do not need to be on guard. They trust you to protect the household while they enter deep, restorative REM sleep. Dogs will only enter this deep sleep phase when they feel entirely secure.

Even if your dog prefers sleeping curled up due to room temperature or ingrained habit, choosing to sleep pressed directly against you or in the center of a busy room still demonstrates a remarkably high level of environmental trust.