I got a mini pig Oct 1. She is apparently 1year old. When I got her she weighed 16 lb, now she weighs 23 lbs. How do I know how old she really is. I know that people some time sell much younger pigs saying they are older and tell you they are minature. She has gained 7 lbs since I got her. How do I determine what weight she will be full grown. If any one has experience with mini pigs does she sound like one?