According to the chart it say that if the dog is 35 oz at 9 wks then he will be about 6 lbs but your dog weighs 44 oz at 9 wks so I think he will be more like 7-9 lbs.. Do you have any pictures of them you can post.. I would be scared to breed a female that small and you definately could not breed her to your male, he will be to large.. Why do you want to breed them?