Ok, I know the answer to that. He's 16wks tomorrow. (4mos NEXT week)
I left him iwth a train on his mat. I left the room to do something. Next thing I hear? The train chuffing away. You have to push down on the funnel to acheive this. He has the train in his hand and a satisfied grin on his face. I know what my little man likes.. well at the moment. Trains. This one in particular. And he wants me to go play with him some more so I am.
I'll get pics of him and his train later.