What are the Postnatal development stages of a child?

Postnatal development stages of a child include the neonatal stage (birth to 1 month), characterized by significant physiological adjustments and early bonding; the infant stage (1 month to 1 year), marked by rapid growth, motor skills development, and sensory exploration; the toddler stage (1 to 3 years), where language skills, independence, and social interactions begin to emerge; and the preschool stage (3 to 5 years), during which cognitive abilities, emotional regulation, and complex play further develop. Each stage is crucial for the child's overall growth and development.