One of our puppies started sneezing Saturday, and when I picked her up she had a runny nose. I called the vet to see if we should isolate her and he wanted to see them all immediately until I told him the fluids she was sneezing and coming out her nose were clear. She was stuffy and crying in her sleep. Then she started to hiccup - and what can I tell you, we're new parents and we were freaking out. Vet said to wait and see how she did and by today (Monday) they're all sneezing and have runny noses (except mama). The good news is they are eating, sleeping and playing normally...and the first one to get sick isn't as stuffy as she was. Could this be allergies? Should we press the vet? Aren't their immune systems too weak for something like this right now? (They are 16 days old.)There's a lot of what can only be described as sniffling going on in their box.