Toddler Guide (12-36 Months)

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Content reviewed against published AAP, CDC guidelines

Editorial policy

The toddler years are a time of explosive growth in language, independence, and personality. Your child is learning to walk, talk, make choices, and test boundaries — all at once. This hub connects you to every resource you need.

Key takeaways

  • Toddlers (12-36 months) are learning to walk, talk, make choices, and test boundaries
  • Tantrums, picky eating, and saying “no” are developmentally normal
  • The AAP recommends developmental screening at 18 and 24 months
  • Potty training readiness typically appears between 18-36 months
  • If your toddler loses skills they previously had, talk to your pediatrician

Toddler essentials

Potty Training Guide

Readiness signs, methods, regression, and nighttime training

Positive Discipline

Tantrums, boundaries, and age-appropriate expectations

Fostering Independence

Help your toddler do things on their own safely

Language Explosion

Language development from 18-36 months

Social Skills

Sharing, turn-taking, and making friends

Daily Routines

Predictable schedules for happier toddlers

Managing Transitions

Crib to bed, bottle to cup, and more

Baby Sign Language

Reduce frustration by helping your toddler communicate

Development

Feeding & nutrition

Health & safety

Sleep

What behavior is normal for toddlers?

Toddlers are figuring out the world — and testing everything. These are normal phases, not problems:

  • Tantrums: Peak between 18-36 months. A sign of developing emotions, not bad behavior.
  • Picky eating: Neophobia (fear of new foods) is developmentally normal. Keep offering without pressure.
  • “No!” to everything: Asserting independence. Offer choices within limits.
  • Biting and hitting: Impulse control is still developing. Redirect consistently.
  • Sleep resistance: Testing boundaries at bedtime is common. Consistency helps.
  • Regression: Stress, illness, or big changes can cause temporary skill loss. Usually resolves quickly.

Browse all toddler concerns →

Frequently asked questions

When do toddlers start talking?
First words typically appear around 12 months. By 24 months, most toddlers use 2-word phrases. By 36 months, most speak in short sentences.
Is picky eating normal in toddlers?
Yes. Neophobia (fear of new foods) is developmentally normal in toddlers. Keep offering a variety of foods without pressure. Most children outgrow it.
When should my toddler be potty trained?
Most children are ready between 18-36 months. The AAP recommends a child-led approach. There is no rush — starting before a child is ready often takes longer.
When should I worry about my toddler's development?
Talk to your pediatrician if your toddler loses skills they previously had, has no 2-word phrases by 24 months, or is not walking steadily by 18 months.

Bottom line

Toddlerhood is a period of rapid growth and exploration. Tantrums, picky eating, and boundary-testing are all developmentally normal. Talk to your pediatrician if you have concerns about your toddler's development or behavior.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

All content follows our editorial policy and is reviewed against published clinical guidelines.

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