Yamatarou Kaeru(1986)

Yamatarou Kaeru

After having lost his parents, Yamatarou, a bear, is raised by a man. Yamatarou's friend is Shi-roku, a steam locomotive, and Yamatarou learns to impersonate the whistle of the locomotive. This is a story for nursery school kids about the friendship between the bear and the steam locomotive. The quality pictures render a sense of warmth to the reader.

(Source: Anime News Network)