What does it mean if your dog is walking in circles?

If your dog is circling before lying down to take a nap, this is pretty typical dog behavior and is normal.

If your dog is walking in circles without a reason (such as circling a toy or a new object in the yard), this can be a sign of brain disease and should be examined by a veterinarian as soon as possible. Dogs can get infections of the lining of the brain, and certain breeds are more likely to have these infections, and the sooner the infection is treated the better the outcome is likely to be.