How does the narrator teach doodle to walk?

The narrator teaches Doodle to walk by initially using motivation and encouragement, pushing him to try despite his physical limitations. He first supports Doodle by holding him up and guiding his movements, celebrating small successes to build his confidence. Through persistent practice and a sense of determination, Doodle eventually gains strength and balance, leading to his first independent steps. This experience deepens their bond, showcasing both the narrator's desire for Doodle to thrive and his underlying sense of pride.