Spaniel doesnt have an off switch generally, but does settle in her bed during the day. However every evening she wanders ceaselessly round, gets in and out of her bed, and is a bit of a pain. I know this can be a sign of dementia but she doesnt show any other signs, she is 12. And why would approaching dementia make a dog like this in the evenings only ? Shes asleep at the mo in her bed and sleeps all night without wandering. any ideas ?