Earth was once home to giant species, including birds with plane-length wingspans and dinosaurs rivaling a Boeing 737. This original special uses CGI to count down the ten largest and most extraordinary finds, uncovering the unique adaptations that allowed each animal to thrive.
Top 10 Biggest Beasts Ever
Massive creatures with wingspans as wide as a school bus and weights equivalent to a small house once ruled the Earth, their enormous presence a dominant feature of the landscape.
