Common baby milestones track a child's physical, cognitive, and emotional development as they grow. In the first few months, babies typically develop head control and begin to lift their heads while lying on their stomachs. By around 4 to 6 months, many can roll over and may start reaching for and grasping objects. At about 6 to 9 months, babies often begin to sit up independently and might start crawling. Around their first year, many babies can pull themselves up to stand, cruise along furniture, and may take their first steps. Cognitive milestones include responding to their name, recognizing familiar faces, and developing simple problem-solving skills. Socially, they may show attachment to primary caregivers, express a range of emotions, and begin to engage in basic interactive play. These milestones vary slightly among individual children but generally provide a framework for typical developmental progress.