Maggie is 4 months and 4lbs. She has gained a pound a month. I saw her parents. They both weighed under 5. So I don't think you can base their weight on their parents. The extra weight could be from granny or grandpa. Maggie's vet did tell me that the really tiny ones, have a lot of health issues. So, I'm happy that Mag-Wad has a little meat on her bones. Now, if I can just get her to slow down on the weight gain. Can you imagine what she will look like at 24 months.