My older dog paces back and forth mainly in the evening. Why?

Pacing in older dogs can be caused by various factors, including anxiety, discomfort, or cognitive dysfunction syndrome (similar to dementia in humans). The evening may trigger this behavior due to lower light levels, increased noise from the environment, or a natural decrease in activity, leading to restlessness. It's important to monitor your dog's overall health and behavior closely and consult with a veterinarian to rule out any underlying medical issues.