Guide on monthly growth & development for baby. Includes month-to-month guide for the crucial first 12 months and also tips on common health problem for baby.During the first year of life your baby responds best to a warm, loving environment. Holding your baby and responding to her cries are essential in building a strong, healthy bond. Remember, you can’t spoil a baby.Use these guidelines to offer age-appropriate activities for your baby. Click on each month for even more week-by-week developmental information. Remember, these are just guidelines, and a healthy child may achieve a milestone later than average. If your child is lagging in several areas, contact your pediatrician for advice.