What is the name of the dinosaur that kills John Hammond in the Jurassic Park novel?

The dinosaur that kills John Hammond in the Jurassic Park novel is Procompsognathus. After the park collapses, Hammond wanders outside while still imagining that he can build a successful dinosaur attraction. A recorded Tyrannosaurus roar frightens him, causing him to fall down a hill and break his ankle. Unable to escape, he is attacked and killed by a pack of Procompsognathus.

This scene differs sharply from the 1993 film, in which Hammond survives the island disaster and is portrayed as a more sympathetic grandfather. That contrast often causes readers to remember the wrong fate or identify the attackers as Compsognathus, a related dinosaur name used in the film sequel The Lost World: Jurassic Park.

Michael Crichton's novel also uses Procompsognathus in its opening incidents, where mysterious animal attacks in Costa Rica foreshadow the danger of genetically recreated dinosaurs. The small predators are portrayed as more threatening than their size suggests, reinforcing the novel's theme that even apparently manageable creatures can become dangerous when released from human control.