gud eve.not all dogs are the same in temperament,there are some females that are overprotective of their litters even guarding it against their owners (which i hope has properly established its "pack leader" status to the dog before it gave birth or even whilst it is still but a puppy),which is a normal behavior of canids if it felt uncomfortable or felt threatened.
i have a similar case with a frend with which she remedied by giving the dam its space but just on the lookout for any would be accidents such as wa pa matang tangi ug amniotic sac,mapiit ang pups,matumban,etc.just be quick in addressing the problem but at the same time be calm so as not to startle the dam & dont intervene too much.as long as ok ra ang pups let the dam do her work her mothering instinct will take care of it (which i hope ur dobe does have).gud luck
