“The Story of Doctor Dolittle” is the first book in the Doctor Dolittle series, written by Hugh Lofting. It was originally published in 1920 and has since become a classic children’s book.
The story follows the adventures of Doctor John Dolittle, a physician who lives in the small town of Puddleby-on-the-Marsh. One day, he discovers that he has the ability to talk to animals, and he decides to become a veterinarian.
From Wikipedia: The Story of Doctor Dolittle, Being the History of His Peculiar Life at Home and Astonishing Adventures in Foreign Parts (1920), written and illustrated by the British author Hugh Lofting, is the first of his Doctor Dolittle books, a series of children’s novels about a man who learns to talk to animals and becomes their champion around the world. It was one of the novels in the series which was adapted into the 1967 film Doctor Dolittle.