3 months old boy

Your ultimate guide to a three month old baby development; from the development stages they will reach to what a 3 month old eats and how often they sleep.

Track the most important 3-month-old baby developments and milestones and learn everyday tips for feeding, sleeping, safety, and more.

See which development milestones your 3-month-old may be hitting – and learn more about your baby's feeding, sleep, growth, and health this month.

3-Month-Old Baby: Milestones and Development profile icon Log In / Join Hi, Log Out Search Log In / Join Getting Pregnant Fertility Ovulation Calculat

While babies grow at a different rate, CHOC provides the averages for growth and developmental milestones for infants from 1 to 3 months old. Read the details here.

Learn what to expect from your three-month-old infant in Month 3 of WebMD's Baby Month-by-Month Guide.

Read up on what to know about daily life with your 3-month-old baby.

By 3 months, your baby will have formed a strong attachment to you. They will respond with lots of smiles, and you can really enjoy your baby as they develop.