Horton the elephant agrees to watch over lazy Maisie bird's egg while she vacations. Much later, after...
| Actor | Role |
|---|---|
 Kent RogersHorton / Peter Lorre Fish (voice) (uncredited) | Horton / Peter Lorre Fish (voice) (uncredited) |
 Sara BernerMaysie / Baby (voice) (uncredited) | Maysie / Baby (voice) (uncredited) |
 Mel BlancMouse / Hunters / Audience Member (voice) (uncredited) | Mouse / Hunters / Audience Member (voice) (uncredited) |
 Frank GrahamNarrator (voice) (uncredited) | Narrator (voice) (uncredited) |
 Robert ClampettVarious (voice) (uncredited) | Various (voice) (uncredited) |