This chapter provides sound understanding of growth and development of an infant. Newborn reflexes, Erickson’s theory, Freud stage of development, Piaget’s intellectual stage weight, height, head circumference, chest circumference closure of sutures are described in detail. Newborn reflexes are given in detail with the help of 8 well illustrated diagrams. First teeth chart and permanent teeth chart are described along with illustrations. 3 tables are included to provide better learning of vital signs and eruption of teeth.