At the beginning of the operation an x-ray showed 4 puppies. Yes, x-ray, not ultrasound. The little one started to weigh in at 11.2 oz. Next day 12 and one half, then 13 three quarters, next day 1 pound, and today 1 pound 2 and one half oz. He is growing by leaps and bounds. As I said black with a white tail-tip and white paws.