Before man ruled the world, Earth was a land of giants, from birds with plane-length wingspans to Boeing 737- sized dinosaurs. Count down the biggest beasts in this spectacular special.
| Actor | Role |
|---|---|
 Dominic ThorburnNarrator | Narrator |
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Before man ruled the world, Earth was a land of giants, from birds with plane-length wingspans to Boeing 737- sized dinosaurs. Count down the biggest beasts in this spectacular special.
| Actor | Role |
|---|---|
| Dominic ThorburnNarrator | Narrator |