A "hungry baby" refers to an infant who is in need of nourishment. Babies typically express hunger through crying, fussiness, or rooting behaviors, where they turn their heads and open their mouths in search of food. This need for food is essential for their growth and development, as infants require frequent feedings, whether through breastfeeding or formula. Parents and caregivers can recognize a hungry baby by observing these signs and responding promptly. Feeding schedules may vary, but newborns often need to eat every 2 to 3 hours. Understanding a baby's hunger cues is crucial for ensuring their health and well-being during the early months of life.