How'd He Get So BIG?

Cullen is 11 months today! I put him next to his teddy bear for his picture and relized he doesn't look so much like a baby anymore! He is getting so good at walking, however it is only when HE wants to walk and not so much if you try make him all the time. He has taken up to about 15 steps, but still realizes he is much faster and steadier with crawling.
I can't wait until his 1 year Dr. visit to see how much he has grown. I think he has definately gone through a few growth spurts this past couple months.
He has been so happy and healthy which is a blessing. He says, "whasthat" to everything and "da-da-da-da" to also everything! He is getting his "B-'s" mastered as well, but not sure what he is trying to say all the time. Its a lot of letters just put together!