Why would a mother dog not take care of her puppies?

M a dog? Re? Was pregnant of our house and she had puppies here. She had seven? They w me? They flip rde f? And he kept sitting on them. R only 2 left. We have? SAVE 2 by it from? From him and f? We flap. My question is, why not a dog? his m? re k? Take care of b? B? S?

Mother dog taking care of the runt seperately?

M the dog? Re? Shooting? the dwarf s? by? s puppies and other k? Takes care of her, but every few seconds L? It works and contr? On the other puppies. Is this normal?