Little Boy picks up on the little details so quickly! Most recently this has manifested as taking care of his baby doll "Buh" just like we take care of his baby brother. It is remarkable the things he does, completely unprompted....
Bringing the baby to our bed to lie down in the morning
Using the bulb to take out baby's boogers
Setting down baby in the swing and covering him with a blanket
(and of course changing baby's diaper..still haven't managed to catch a picture of that one).