Dorothy is "four years old".
A developmental milestone is a capacity that is accomplished by most kids by a specific age and which can include physical, social, enthusiastic, intellectual, and relational abilities, for example, strolling, imparting to others, communicating feelings, perceiving commonplace sounds, and talking. Most four-year-olds can Rhyme, Name and distinguish numerous colors, Draw different shapes, they can count to five, Tell where they live and also Draw pictures that they frequently name and portray.