I had one in my last litter that her birth weight was 5.4 ounces. She was only 4 1/2 inches long fronm her nose to the base of her tail. She is doing fine now and weighs about 14 pounds at 11 weeks. This little gal must have left all the silly stuff in the womb as she is NUTS about retrieving.She beat one of my big dogs to a hen duck and sounded like the tasmanian devil refusing to give it up ...........LOL. Now to think of a good name cause she ain't going anywhere but here.. Sundown's Teeny Terror.......hummmmmm has a ring to it. Be a Pocket rocket.