BuBu ChaCha (TV Series, 26 episodes, AniDB)

Requested on Nov. 12, 2021, 4:04 p.m.

Randy, a 3 years old boy, and his pet dog ChaCha are best of friends. One day, ChaCha passes away, and turns into a star to watch over Randy. But ChaCha decides to return to Randy in the form of a toy car. Randy and ChaCha keep this secret to their own selves, and off they go to their adventures, where they learn that every little thing is a big discovery. Source: official site