Baby Development

What to expect month by month, from first smiles to first steps, and when to talk to a doctor.

Baby Milestones by Month: What Most Babies Do From 2 Months to 1 Year

The milestones most babies reach by 2, 4, 6, 9 and 12 months, from the first social smile to pulling up to stand, with simple ways to play along and when to talk to a doctor.

9 November 2026 · 5 min read

Medically reviewed by Dr. Rabia Saleem Safdar