Today was his 4 month check up, although he is really almost 4 1/2 months. He is doing great. He is 15 lbs. 1/2 oz., and 26 1/4 inches long. And if anyone cares, his head is 16 inches. Here is a video of him today rolling over. He first rolled over from belly to back, but since he got the back to belly down this week, he does it more.