I bought my dog from an Amish family when she was only two months old, and a year or so later, I watched a documentary about the Amish. Whenever someone spoke Pennsylvania Dutch (i.e., Amish German), she would perk up her ears and cock her head to one side, as though it was familiar to her. She does the same thing when she hears wolves on TV.
I assumed that she had some memory of living with the Amish family and hearing them speak the language. Is there any possibility that this is the case?