My doctor, at least, checks inside the eyes/ears/nose/mouth, listens to breathing and heart, and palpates the abdomen for something (I don't know what, hernias? probably multiple things). Checks height/weight and head circumference as well. He is my 1st baby, and I've been bombarded with comments about how big/fat/husky he is since he was maybe 1 mo old, and going to the doc always puts things in perspective he is actually a small baby, lay people make a very untrustworthy assessment of your baby's size. She also checks iron levels. I can't do these things at home, and I value that once-over.