Taxi Dog by Svend Otto S.
This was originally published as Taxa-hunden Jesper in Denmark. A tag shows up at a taxi stand. It is befriended by the taxi drivers. The dog loves to ride along on the taxis' running boards and participate in urban activities. One day, the dog caused a ruckus and a farmer decided to adopt the dog as a guard dog. The dog doesn't want to be in the country, so he chewed through his rope and hitched a taxi ride back home. He stayed in the city with the taxis until he met a female dog.
The book tells a story back in a classic time with a classic style.
