Newborns enter the stage of vocalizations within prelinguistic communication. Cooing, as an early vocalization, usually emerges around 2-4 months of age. This cooing is characterized by simple, vowel-like sounds, such as “ah” and “oo,” and signifies the infant’s growing control over their vocal cords and ability to interact socially. The process of cooing lays the foundation for future babbling and language development, facilitating communication and bonding with caregivers.