There were some cool changes between 16 and 18 months, but I think the Fudgelet has been really progressing the last two months. He is starting to become more of his own person. I like to look at him and try to figure out what he will look like when he is older. His facial expressions and emotions are quite varied, and definitely make you think he is in the teenager stage of toddlerhood. Or at least the pre-teen stage. Not only is he more aware of everything around him, he remembers things fairly well (like which room has the fun Legos), and is able to express himself so much more.