Thanks for the replies, everybody. We are in the process of contacting the manager of the store (he was out yesterday) today.

I should clarify that the date on the bag is the manufacture date, so it probably was good for maybe a year after that?? But still, way out there.

I'm quite surprised it didn't smell rancid!
Actually, when Mark opened the bag of food he did notice a smell, but quickly attributed it to be dog food (which isn't pleasant smelling anyway) Again, I don't think we will ever open another bag of dogfood without taking long deep whiffs of it to make sure it is still good, instead of just taking it for granted that it is still good.

Anyway, Emerson is still having awful diaherria this morning, but Malone is doing pretty well.

Thanks for all the well wishes.