I'm curious if this is more common than I realize. I had never heard of it before Little Ann. She was the only puppy in her litter. I don't mean the only one to survive, but the only one born at all. She is also the healthiest puppy I have ever seen. At 8 weeks she weighs over 10lbs. At birth she was a normal sized newborn, but has grown so quick and matured so quick since then. Have any of you ever seen this before?