A milestone checklist for your baby helps track their development across various domains: motor, language, social, and cognitive skills. In the first few months, key milestones include smiling socially around 2 months, cooing or making gurgling sounds, and following objects with their eyes. By 4 months, many babies can reach for and grasp objects, babble, laugh, and support their own heads. Sitting without support usually comes around 6 months, and by 9 months, babies typically start to crawl, babble strings of consonants, and may begin showing stranger anxiety. At the end of the first year, many can stand with support and use simple gestures like waving "bye-bye," and possibly say "mama" or "dada" to the correct parent.

The second year of life brings even more exciting developments. Walking independently usually occurs just after the baby's first birthday, and by 18 months, many toddlers can climb stairs with assistance, point to get the attention of others, and use about 10 words regularly. By 2 years old, they often begin combining two words to form simple sentences, follow basic instructions, and play pretend. It's important to remember that each child develops at their own pace, and these milestones are guides, not strict deadlines. If concerns arise about a child's development, it's beneficial to consult a pediatrician for personalized guidance and potential early intervention strategies.