Q: My baby is ... growth charts for weight, height, and head circumference. These simply represent the average weight, height, or head circumference of a bunch of normal children.

This post on 4-month-old baby development milestones will give you an insight into their developmental traits. Babies grow with each passing day, and by the time they are four months old, they are ...

Developmental ... in infants and children. Unlike growth, these are functional skills or age-specific tasks children can do ...