Being the second boy in the family, they often learn much faster from the eldest, and master the skill of articulation at a much earlier age too. He is much feistier, playful, daring and does not fear expressing himself.
Sometimes, when you look at them, you know that they are deep in their thoughts, based on their expression. Some say 100,000 neurons are formed daily in their brain at the age of just three! That's some serious ability to think in that small brain of his!