Well, I suppose I can help there, too. I always had dogs when I was a kid, and one of the females, Shuffles, had pups one year.
Now, not all dogs are good mothers. Just like humans, some take excellent care of their puppies and are very protective, but some are rather indifferent. Shuffles was a good mother. I watched her with them for hours as a kid.
She would lay in the barn in a soft pile of straw, and watch carefully as her little ones scampered, wrestled, and tumbled. On occasion, one would stray too far, and start sending out Lost Puppy Distress Calls. She would heave herself to her feet, walk over to him, pick him up gently by the scruff, and bring him back over to the others. As a kid, I was horrified to see a tiny puppy neck and head dissapear into her large, toothy mouth, but she somehow knew how gentle she had to be.
During feeding time, the puppies would pile on to her, each bumping and rooting for a nipple. She would sometimes bump them into place with her nose, and would lick and sniff them while they were feeding-- much like a mother kissing her children and checking them for bruises or cuts. Since she had more puppies than nipples, she would wait until she felt the stronger ones had had enough, and then would bump them aside in favor of the runt. If the stronger puppies would try to push the runt aside, she would growl and snap at them. (Some dog moms will just watch as the stronger ones starve the runts.)
At night, they would all pile against her side to sleep. On occasion, the whole pile would shift, probably started by just one puppy who wanted to change position. All of them would then have to re-arrange themselves.
Shuffles was very protective of her puppies, but allowed me to play with them. I can still remember that she looked concerned whenever I would scoop up a little wiggling puppy and cart it off to dress in doll clothes. When I would return the pup, she would sniff it over carefully, and then give it a head-to-toe bath and offer it a nipple as if to strengthen it after its ordeal.