* NightmareFuel: All of the predators depicted, but ''Deinonychus'' deserves a special mention. Perhaps it's due to the awkward, messy way its feathers are animated, thanks to the less-than-stellar effects, but the animal looks terrifying, and proves that feathered dinosaurs are ''not'' all cuddly little chicks. Not helped at all by the sounds they keep making.
* SpecialEffectFailure:
** The animals move ridiculously fast at times. The absurd speed of the ''Daspletosaurus''' head as it lashes at the ''Corythosaurus'' makes the scene look rather laughable.
** As a ''Smilodon'' jumps on the back of a bison, you can see its paw clipping through the herbivore.
** The lighting and rendering of the animals aren't too hot either.