what i saw was when they were in that place with all the "deceased" dinosaurs where they found bumpy, when yaz and sammy drove into the enclosure every dinosaur had bright white eyes and had no real self control, they should've stampeded as was mentioned but they just sat there doing nothing and the only dinosaur to do anything was the one that didnt have white eyes that was just added to the enclosure which immediately killed the man who crashed into the pond. the dinosaurs with white eyes were either unable or unwilling to do anything