Blog — Vagal tone
How to Tell if Your Dog is Socially Engaged
The Vagus Nerve: A Shared Biology Dogs are like humans in many ways—including their biology. One of the most important systems we share is the 10th cranial nerve, also known as the vagus nerve. This nerve connects the brain to the body and plays a central role in regulating the autonomic nervous system in both humans and dogs. When everything is going well, the ventral vagal system is in charge. In this state, we feel: Safe Comfortable Social and connected Breathing is easy. Movement feels fluid and joyful. We’re in a state of flow—playful, curious, and open to interaction. But...