6 months I roll from front to back and from back to front . I can do crunches but can sit up by myself yet and it is soooo aggravating! I talk all the time and love to stand and jump ! I'm almost 17lbs and am 25 1/2 inches long . I sleep almost all night and have started eating apples , squash and pears so far all of them are yummy. I love to eat my fingers and play with my toys and still love fireman Sam. :-)