Luckily, Grant, Tim, and Lex all survive the trip over the waterfall relatively unharmed. Having lost sight of its prey, the tyrannosaur turns its sight in the direction it thinks their escape most likely: farther downstream. This is no pea-brained reptile, but an intelligent, thoughtful hunter capable of anticipating its prey’s movement and stalking them over long distances. The dinosaurs continue to act in ways the park operators did not predict.