Dinosaurs and Birds

The World of the Dinosaurs

Dinosaur Characteristics

Diet and Feeding Behavior


Most dinosaurs walked on the forward parts of their feet. This is called digitigrade movement; it is the same way that birds, dogs, and cats move, and is very different from the flat-footed, or plantigrade, way that humans, bears, and reptiles walk. Some dinosaurs were quadrupedal, meaning that they walked on all fours; others were bipedal, moving on their hind legs.

When many people think of dinosaurs, they envision a heavy, slow-moving animal whose…

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Courtship and Mating




Body Temperature

The Earliest Dinosaurs

The Saurischia—Lizard-hipped Dinosaurs

The Ornithischia—Bird-hipped Dinosaurs

The Extinction of the Dinosaurs

Famous Discoveries, Discoverers, and Sites

Additional Reading