Hi when you have a sick puppy you should always look at all the options, Yes dogs can have flu like symptoms, not the same strain as people, but very flu like.  There are several other types of illnesses that it could be, some of them very persistant.  Has the puppy had all of its … Read more

There could be many problems, have you gotten them of solid food? Food Allergy? Parasites? Any other symptoms?

Can you be a bit more specific, Is it the dogs first litter? Any other symptoms? If it is not the first litter, and this behavior continues, talk to your vet. Is the dog running a fever? Are the puppies nursing OK or are they hassling as well? Are the puppies gaining weight?