They can if they are lactating already. It probably doesn't occur often, but it has happened before, and likely will again. The greater question is 'will' a particular dog nurse another's pups.
Yes she can and if she has puppies and enough teets then she can take on a few more puppies. However, you have to be careful introducing the other puppies because not all dogs will accept other puppies.
Usually, yes. If the mother dog accepts the puppies, she will happily nurse them.
Vets and animal welfare keep motherly dogs, both spayed and not spayed, for nursing abandoned puppies.
Usually ten.
Mother dogs can nurse around 10 puppies.
No.
Spaying is the removal of the ovaries from a female dog. No dog that is spayed can have puppies. No female dog can have puppies with another female dog. If you are asking about a male dog, the correct term is neutered, not spayed.
Not okay. Unrelated dogs often will kill puppies.
NO other dogs should be around the pregnet dog :o)
The puppies will nurse from the mom.
The largest number of puppies in a mixed breed litter will vary from dog to dog. Some dogs might have only one puppy, while another dog can have 15 puppies. As a rule, smaller dogs have fewer puppies.
A dog should usaully not eat it's newborns. If it eats one, make sure he/she is kept away from the puppies. If it's a she, find another female to nurse them.
probably not. only if that dog has puppies.
the number of puppies a dog will have depends on the breed, and size of mother dog in question.
the dogs puppies will be premature
Well dogs can have 21 puppies because I have seen a youtube vidio that a dog had 21 puppies but a whole litter of 21 puppies doesn't usually happen so 21 puppies is rare but dogs can have 21 puppies.
Yes
You can take a male dog to a vet to have this surgery done, yes.