Olivia is just about 18 pounds now, and very active. She is close to being able to sit up on her own. She loves to spit raspberries all the time, and laugh if you do them back at her. She still loves to watch peoples faces intently and will reach up and put her hand on your face if she is looking at you but you are not looking at her. She is my little thinker, it always seems like the wheels are turning in her little head. She also rolls all over the place now. I put her down on the floor in my office with some toys while I was working on some work emails, and about 3 minutes later, found her all the way under the guest bed. She may not be able to crawl yet but she is certainly mobile by rolling!
