It is possible. Sires do not recognise their pups in the same way a human father would and may injure the pups. When a litter is born, it is safest to keep the dam and litter in a space separate from any other dogs, including the father.
Take it to the vet. Asap!
Food grade DE will not hurt puppies.
it depends on where they live, if they live in the snow without an owner/wild they will bark or growl at you if they think you will hurt them. if they are pets, they do not need to much protection because they live in a house.
They are dogs, a dogs breed does not matter with whom you contain it with unless there are to many dominant breeds together(rottie,pitbull,greatdane,doberman,etc) a husky and a shah tzu should be fine, just keep an eye on them at first for any signs of aggression, you want their tails to be wagging and to know they accept eachother by playing.
I'd say steer clear for a week or so. The mother can be over-protective, she can leave the puppies, or the puppies might even get hurt.
if the owner leaves or when they get hurt
A LOT! If your dog has puppies then it could take up to a whole house for them to play and run around. You can keep it to a limit though, like maybe a large living room. If you have dogs and puppies though, it might be better if you keep the big dogs (except the mother and father) away from the puppies so the puppies do not get hurt. Especially if you have newborns and older puppies like 9 month olds, because the older puppies don't know what's right and wrong and could play to rough with the younger puppies.
I don't really get your point, you mean like just for Sibirian huskies or all the dogs? Or do you mean because they are sledge-dogs? In that case, maybe treat them better and don't work them out that hard. Start an organisation and collect money !? That would be my best answer......
I'm assuming you are referring to the mother dog. No it doesn't hurt her, but it does start to hurt her once the puppies get close to weaning age, because their sharp little teeth can be a bit painful when they try to latch on to her teats.
alway hold dogs careful or you could hurt them
An example would be like the commercials of the puppies that are injured or hurt, and they want you to pay them money to help the puppies.
Smoking hurts everyone and anyone. If you're currently smoking, you should try to stop. It can cause cancer for you or your puppies.