Quoting Minion:" I have no idea, but 12 lbs is really small for a 7 month old. Is he short too?"
Quoting Honey & Toto:" My daughters 6 months and is 12lbs 15oz Her doctor said she's in the 5% He said because she gained ... [snip!] ... its nothing worry about that she's just on the small side. When her doctor was concerned he had me put her on rice cereal."