He can sit without support. Baby can stand while holding onto someone or something. He can pull himself up to a standing position from a seated one. Baby walks by holding on to furniture. Baby plays peekaboo.
Baby waves good-bye.
All babies have their own internal developmental timetable. If you have concerns about your baby's development, discuss them with her doctor. With strength comes your baby's desire to get moving, and he'll be crawling soon. Some parents buy baby walkers to help their little ones travel from room to room. Many doctors discourage the use of baby walkers.