I am loving this age. I know that every age has it's good times and bad but 4 months is a blast (other than the teething). Jackson is so smart. That might just be a mother thing but I really think he is. He likes to play catch with his duck, has started to figure out his rings, and is playing with lots of other toys too. It is so cool to see him observe me doing something and then doing it. Here we were playing peek-a-boo and he was cracking up! First I was putting the cover over his face and then he started doing it on his own.He has also started to become very shy around people he doesn't know. He will look at a person and smile and then he will put his face into my shoulder like he is hiding from them. It is so cute.