Caleb is two months old now, and while I don't know his official measurements (his dr. check up is this Friday), I do know that he's a BIG dude. I think he's roughly 15 lbs. And, somewhere around the height of Godzilla himself. All of which makes carting him around for most of the day quite the strength workout for me!
Maybe he just has a giant, heavy head and it's too hard to hold up. Or, he's a bit on the lazy side. Either way, I figure eventually he'll have to hold it up!