Today, we did some measuring by marking my son's height against a wall. Something my dad used to do when we were kids.
Though his pedia did give us a growth model or growth chart, I could use (its one of those giraffes with a stretched neck with the inches on it) I still prefer Lolocow's method. Something about scratching or marking the wall seems so permanent. A touching rite of passage as it can get for a six year-old.
So today on August 18, 2010:
Cow stands 46 1/2 inches which is 3.8 feet