I took the dogs to Thoresbury (near Clumber Park) yesterday. I just kept them on the field area and didn't go around the woods. My yorkie has been sick once and her stomach is a bit upset. Other than that she is fine and doesn't have the lethargy that is the third symptom. She's been eating and playing. I'm sure I'm being paranoid, but I know of someone's dog that died from it. Does anyone know if just two symptoms is enough to worry?