He is starting to do a lot more smiling and he almost has a laugh, but it's still not time for belly laughing yet (that's one of my favorite milestones). We can tell his cries apart and the cry for "feed me Mommy!" is the most emphatic, followed closely by the cry for "you have no idea how messy my diaper is right now Mommy!" He loves looking at the toys hanging from the shelf over his changing pad and the animal mobile hanging over his crib and he sometimes cries when you take him away from those spots when he isn't ready to leave. Sleeping is one of his favorite things to do, especially when he's in Mommy's arms for a nap. He's also a champion eater and usually packs away somewhere just shy of 30 oz of formula in a day (in 3-4 oz increments about every 2 hours during the day and about every 4 hours at night). We can now set the alarm for 4.5 hours at night based on his weight of a little over 5 kg (we could probably go for 5 hours, but we are trying to remain conservative just to be on the safe side).
Here are some pics of our big (in heart) little guy...