The ZhuZhus theme song

 The "The ZhuZhus theme song" is composed by Jesse Colburn and Aaron Verdonk, and is featured in every episode.

1 (Polly and the ZhuZhu Pets)
Before the name change, this theme was used from episode 1a to episode 7b.

1 (The ZhuZhus)
After the name change, this theme was used from episode 8a to present day.

First version
This version airs on Disney Channel in Belgium.

Second version
This version airs on Boomerang in France.