Just curious on average how big a 2 month old pitbull should be. I just adopted a pitbull from the humane society and they said she was about 2 months old. She weighs about 12lbs (just a guess I have not weighed her) and is about 12-14" tall at the shoulders. She looks put together really well. I'm curious because I just seen a pit at the pet store and its owner said it was 6 weeks old, but it was just a little bit bigger then his hand. Maybe 3 or 4 pounds at the most.