First Year Development

Your baby's physical development is a thing of beauty and a source of pride. From sitting to crawling, walking to talking, smiling to laughing, each achievement is a developmental milestone. Learn what to expect next in your baby's physical and intellectual development.
A baby happily walking while a woman supports them by holding their hands indoors
PSA: Please Stop Asking If My Baby Is Walking Yet
baby learning to crawl
How to Help Your Baby Crawl
babies at various milestones
A Week-by-Week Guide to Your Baby's First Year Milestones
Average Baby Weights During the First Year
Tracking Your Baby's Growth: Month-by-Month Charts for Average Weight and Length
A mother and baby sitting on the floor playing with blocks
Parents, You Have Permission to Stop Obsessing Over Milestones—Here's Why
A woman sitting with a child reading a book together by a window
New Research Suggests Intelligence Can Be Predicted as Early as 7 Months Old
A mother practices pretend play with her preschooler.
How to Encourage Your Child's Language Development at Every Stage
Baby laying on bed
3-Month-Old Baby Sparks Discussion About Echolalia—Experts Weigh In
Photo illustration of baby crying
Why Is My Baby Always Fussy in the Evenings?
Baby in crib
‘Fully Conscious' Baby Goes Viral but Is Her Reaction Unusual?
Baby's First Week
Your 1-Week-Old Baby’s Milestones and Development
The stay-at-home dad spends time during the day to play with his baby girl.
When Do Babies Start Babbling?
4-week-old baby development
Caring for Your 1-Month-Old: Key Milestones and Development Insights
3-week-old baby growth and development
Navigating Your 3-Week-Old Baby's Developmental Milestones
5 Week Old Baby Development
A Guide to Your 5-Week-Old Baby's Development
10-Month-Old Baby
Your 10-Month-Old Baby's Development and Milestones
6-Month-Old Baby
Your 6-Month-Old Baby’s Development and Milestones
5-Month-Old Baby
Unlocking Your 5-Month-Old Baby’s Milestones and Development 
6-Week-Old Baby
What to Expect from Your 6-Week-Old Baby's Development
7 week old baby
Understanding Your 7-Week-Old Baby's Key Milestones
Father feeding his baby son and he is enjoying the delicious vegetable puree.
When Your Baby Is Ready to Use a High Chair
Baby sitting on bed and smiling with mom
When Do Babies Recognize Their Name?
mother kissing her baby on the head
What to Know About the Rooting Reflex in Babies
Newborn baby laying in hospital basinet with their eyes open
Is It True That All Babies Are Born with Blue Eyes?
Baby crying
Terrifying TikTok Shows Baby in a Breath-holding Spell
baby being fed
When Do Babies Have Growth Spurts?
toddler looking at television
Is Listening to the TV Helpful or Harmful for Babies?
Father Encouraging Baby Daughter To Take First Steps At Home
Gross Motor Skills in Babies, Toddlers, and Preschoolers
Baby walking with parent
 Early Walking Wonders: What It Means for Your Baby's Future Success
Parent teaching child sign language
How To Teach Your Baby Sign Language
dad holding happy baby and bonding
Age-by-Age Guide to Deepening Your Bond with Baby
An image of a baby laughing.
Babies Start To Develop a Sense of Humor as Early as 1 Month, Study Shows
baby touching parent's chin
What Do My Baby's Sounds Mean?
child talking with baby sibling
A Month-By-Month Guide to Your Baby's First Words
mom reading to baby
Start Reading to Your Baby Now: A Step-by-Step Guide for Every Age
Cute little baby boy, playing with abacus at home
6 Things You May Not Know Your Baby Can Do
mother playing with baby on changing table
50 Simple Ways to Make Your Baby Smarter
babies
Is Your Baby a Late Bloomer?
A pediatrician holding a baby and smiling while the baby looks at the mother in the foreground with her back to the camera
How to Read Height and Weight Percentiles On a Baby Growth Chart
Asian Mother Holding Baby Pulling on Shirt Illustration
5 Ways to Handle Your Baby Pulling, Tugging, and Pinching You
Afro Mom and baby
Uncover Sweet Baby Milestones: From Smiles to Steps and More
An image of a mother and her baby.
13 Sweet Ways Your Baby Shows Love and Trust
baby in high chair
8 Sometimes Frustrating Phases of Baby Development
baby standing with help of a bench
6 Weird Baby Behaviors Uncovered: What They Really Mean
parent holding their toddler in the air
How Your Baby Learns To Love
baby clapping
7 Subtle Messages Your Baby Is Sending With Body Language
Baby Monthly Milestones
First Year Baby Milestones by Month
Pediatrician Measuring Baby Weight on Scale
What to Know About Infant Growth Charts
Father lifting up and smiling at infant
11 Expert-Recommended Infant Activities for Babies Up to 6 Months Old
Baby stands at play station
A Step-by-Step Guide to Baby's Motor Development
baby motor skills
All About Your Baby's Fine Motor Skill Development
baby being measured
What a Growth Chart Can Tell You About Your Baby's Development
mom teaching baby sign language
Master Baby Sign Language: 50 Words Every Parent Can Teach
African girl crying and reaching upward
How To Handle Separation Anxiety in Babies
Baby's First Year Journey
Welcome to Your Baby’s First Year
toddler with tablet sitting in front of jumble of letters
Do Tech Toys Hurt Baby's Language Development?
Playing With Baby: Tummy Time
How To Play With Your Baby
How Much Weight Should My Baby Gain Each Month?_still.jpg
How Much Weight Should My Baby Gain Per Month?
baby chewing on hands
Why Babies Suck and Chew on Their Hands
baby in high chair
Essential Products for Your Baby's Growth and Safety at 6-9 Months
illustration of baby, 9 month old text
Your 9-Month-Old Baby’s Milestones and Development
illustration of baby, 11 month old text
Your 11-Month-Old Baby’s Milestones and Development
illustration of a baby, text reading 4 month old
All About Your 4-Month-Old Baby's Milestones and Development