Thanks guys. I'm not sure if it was parvo or not. I had them in a wire kennel in my house. All were doing fine, very good appetites and growing good. I guided hunters last week and left others in charge of their care. I noticed they started acting different, and looking dehydrated. Tried to double the amount of milk replacement to them, but had to force feed most of them. Then they started dropping like flies. No signs of bloody scours, that you typically see with parvo. Total repeat of last year with this litter.
Tony