Seriously. We just got back from the 4 month well baby visit, complete with two shots, and he’s the happiest he’s been all day. I think it’s related to the fact that he has just recently discovered his feet. He’s now coordinated enough to grab them easily, although they haven’t made it into his mouth just yet.
His hand-mouth coordination is getting good too, although we’re still working on aiming the pacifier the right way.