Spay or neuter it, keep it inside, or inside a kennel.
you can if you want to it just means more puppys
There is a myth that having a litter of pups can calm a female dog. This isn't true, having a litter can make a female dog more protective, because she has babies to guard. Proper socialization, training and spaying will correct temperament problems.
Usually a father dog does not know his pups
If your dog has pups under the house you can move her and the pups inside. Moving the pups will not make her stop feeding the puppies. Mother dogs are very protective of their puppies, so be careful when you move them and do not let anyone she does not know near them.
It depends on the breed of the dog, but make sure not to rush a female dog. Over-breeding can lead to many problems with the dog and future litters.
Yes it is possible, but it usually takes 6 or 7months for your female dog to go on heat again. I would suggest you spay your dog, if her first lot of puppies died already, it is not a good idea to let her give birth again.
No, but be carful not to let the pups eat any garlic!
yes, only for 6 weeks then she can let them explore with Independence.
yes, it will let them nurse as soon as they are clean enough to breath and move around.
There are many reasons for puppies not surviving birth. Mother's don't "let" the puppies die, there isn't anything the mother dog can do about it. Some pups are born with internal problems that aren't apparent. Healthy pups should survive, unhealthy pups shouldn't.
Talk to your vet, it all depends on the breed/health of the dog.
Your gonna have to feed the pups yourself if you don't your pups will die. If the dogs breast are swollen then your dog is sick.