No; there is likely nothing wrong. It's not uncommon for a dog to only have two puppies especially if it is a first breeding.
It is common for a dog to eat the placenta of the puppies after she gives birth. On rare occasions, a dog will eat her puppies when they die or right before death because she instinctively knows that there is something wrong.
probably not. only if that dog has puppies.
yes the dog can, but the puppies may grow to have thing wrong with them and they could die or may already be dead
There is something wrong with your dog, go to your vet.
its a dog it probably ate something wrong
This is possible, yes.
The only way to tell if your dog is too small to have puppies is to ask your vet. Your vet will be very honest with you.
a dog will only eat her puppies if she feels like she is not ready for puppies after the first one you should be fine but still keep an eye on them for the first few days
Yes, if the dog finds something intriguing. Dogs digging through the trash is not a behavior only found in puppies.
it best not to have puppies with a dog from a dog shelter
Only if she mated successfully whilst in heat.
Yes, unless you are a mama dog moving your puppy.