Random Trivia -

The T. Rex occasionally malfunctioned, due to the rain. Producer Kathleen Kennedy recalls, "The T. Rex went into the heebie-jeebies sometimes. Scared the crap out of us. We'd be, like, eating lunch, and all of a sudden a T. Rex would come alive. At first we didn't know what was happening, and then we realized it was the rain. You'd hear people start screaming.

James Cameron has stated that he wanted to make this movie, but the rights were bought "a few hours" before he could bid. Upon seeing this movie, Cameron realized that Steven Spielberg was the better choice to direct it, as his version would've been much more violent ("Aliens (1986) with dinosaurs") which "wouldn't have been fair" to children, who relate to dinosaurs. Still, Cameron was quite instrumental in getting Jurassic Park made for two reasons: first, seeing the Alien Queen in Cameron's Aliens is what convinced Spielberg to hire Stan Winston to create the huge animatronic T-Rex; and second, the computer-generated visual effects in Cameron's Terminator 2: Judgment Day (1991) directly influenced the development of digital dinosaur effects in Spielberg's movie

Steven Spielberg changed the climax a few weeks before the end of the shoot. When he saw early visual effects footage of the first two T. Rex sequences, he realized that more was possible. The original climax involved the Raptors being killed by the T. Rex skeleton in the Visitors Center, but Spielberg felt the audience would hate him if the T. Rex didn't make one final heroic appearance, since he considered the T. Rex the star of the movie, hence the Raptor and T. Rex fight. The new climax was completely computer-animated unlike the first T. Rex attack. First, they enacted it, and then added in the effects. It was the last scene to be filmed.

The sounds made by the Brachiosaurs were a combination of whale and donkey sounds.

According to Fandango, it would cost approximately $23,432,400,000 to build a real-life Jurassic Park (in 2015 U.S. dollars): $1.5 billion - the cost for the park itself. $10 billion - to purchase an island off the coast of Costa Rica with sixty-six square miles of land (twenty-two square miles for Isla Nublar and forty-four square miles for Isla Sorna). $8 million - research and legal team. $9 million - harvesting dinosaur DNA. $8.5 million - overhead to clone dinosaurs from the DNA. $11 billion a year ($32 million per day) - employee payroll and operations budget. $200 million a year - dinosaur food budget. In total, the estimated yearly operating expenses for Jurassic Park add up to approximately $11.9 billion.