Why are children ages 1 to 3 called toddlers?

Children ages 1 to 3 are called toddlers because this stage is characterized by the development of walking, which typically begins around the age of one. The term "toddler" reflects their unsteady gait as they begin to explore their environment. This period is also marked by significant growth in language and social skills, making it a unique phase in early childhood development. The name captures both their physical movement and the newfound independence they exhibit during this time.