Do you heat your home with gas, wood or oil? If so, check for carbon monoxide. It's possible even a small amount of CO could affect your pup but not be so much that you would feel it. Any headaches in the house, or more than normal? I hear your furnaces have been working pretty hard over there. Since the vets came up empty, that's all I can think of with the info given. Daily walks? Did you stop/change a routine because of a recent weather change? Hope the best! |