15 weeks

Things that Caleb can do at 15 weeks are:

mimic sounds like "ooooo"
reaches for things
tries to pull himself up when playing in his bouncy(he grabs hold of his fave toy, "Henrietta the Hippo" and tries to give her a "Kiss"
chomps on his fingers so hard that he makes himself cry
stick tongue out a lot
almost roll over
tries to stand when we pull him up
holds onto his teether, and pulls paci out of his mouth