Science Buddies: "Ask an Expert"

When a Dog wags its tail is it the left or right side of the brain that makes the dog do that?

Great question! I would research which part of the brain controls motion and these types of action in dogs. The side that controls the motor system of the dog will be the one that controls the tail wagging. I hope that helped!

If I were you I would definitely research which hemisphere of the brain controls the dog's motor senses. The one that controls motion will be the one that controls the tail wagging! Let me know if you need more help!

Hi brandylovesme17,

You have a very interesting question! Note that tail wagging in dogs is a repetitive behavior that follows a certain locomotory pattern. Many repetitive locomotor movements, including walking and running, are thought to be largely controlled by groups of neurons called central pattern generators. Often, these central pattern generators are located in the spinal cord rather than the brain.

That said, dogs often wag their tails in response to what's happening around them, especially (we think) when they are happy. Maybe you could look into what parts of the brain are most associated with emotion to get an idea of where the initial trigger for tail wagging might begin.

I hope this helps. Please post again if you have more questions.

Heather