"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."

The Japanese tourists running from the rampaging T. rex in the San Diego scene (an obvious homage to Godzilla movies) are saying, in Japanese, "I left Japan to get away from this?!"

To cast Hammond's granddaughter, Lex, Spielberg auditioned a number of girls and asked them to record their screams. Ariana Richards recalled that she won the role because she was the only one whose taped scream was loud enough to awaken a sleeping Kate Capshaw (Spielberg's wife) and send her scurrying down the hall to see if her children were all right.

It looked very frightening, and Ariana Richards has it in her house to shock anyone coming in. "It's pretty big, maybe five feet long, maybe two feet high in a glass case," she said.

Alan Grant, from the original Jurassic Park, was based on paleontologist Jack Horner (pictured), who both Michael Crichton and Steven Spielberg consulted about dinosaur behavior. For The Lost World, the character Robert Burke is based on rival paleontologist Robert Bakker, with whom Horner has a friendly feud.

Their major disagreement is over the behavior of Tyrannosaurus rex. Horner argues that T. Rex was a scavenger, while Bakker insists that T. Rex must have been a predator. Horner reportedly asked to have Burke eaten by the T. Rex in The Lost World. Bakker was apparently flattered, and wrote back to Horner, saying "I told you T. rex was a hunter!"

The T.rex weighed 12,000 pounds and was extremely powerful. To alert the crew when the T. rex would come on, they used flashing lights because if someone stood next to it and the head went by at speed, it felt like a bus going by.

We can see this from its scars on its neck where the velociraptors attacked it in Jurassic Park

Erasing lab data is highly improper and unethical in scientific settings, hinting at Dr. Wu's corrupt nature in later films.

The Spinosaurus was the largest animatronic ever built. It weighed 12 tons and was operated by hydraulics, which allowed it to operate while completely submerged in water.

According to an interview with William H. Macy, the film's animatronic Spinosaurus had a 1,000-horsepower motor and could turn its head at twice the force of gravity, with the tip of its nose moving at a speed of more than 100 miles per hour.

To create the shot they fed a guitar string through the car, down to the ground, and then had a guy lay under the car and pluck the guitar string

In the shooting script, it was written that during the Tyrannosaur's escape, Dr. Ian Malcolm would simply get out of the car and run away, much as Donald Gennaro had done moments before. In fact, this is how Dr. Malcolm behaves in the scene as written in the book. When the time came to film the scene, it was Jeff Goldblum's idea to make his flight more heroic, by having him distract the Tyrannosaur so Dr. Grant could save the children.

The film opened on Friday, June 11, 1993, and broke box office records its first weekend, bringing in $47 million. It eventually went on to make more than $900 million worldwide.

Screenwriter David Koepp remembers the day it opened: "I was in New York and I walked to the Ziegfeld [Theatre] to see how it was doing. The guy comes out and announces to the big line, 'Ladies and gentlemen, the 7 o'clock show of Jurassic Park is sold out.' And people go, 'Oooh.' And he goes, 'Also the 10 o'clock show is sold out.' And they went, 'Ooooooh.' 'And also Saturday night's 7 and 10 o'clock shows are also sold out.' And I was like, 'I'm not an expert, but I think this is very good.'"

The Triceratops lacked suitable teeth for grinding food and so, like birds, would swallow rocks and use them as gizzard stones. In the digestive tract, these rocks would grind the food to aid in digestion. After six weeks, the rocks would become too smooth to be useful, and the animal would regurgitate them. When finding and eating new rocks to use, the animal would also swallow West Indian Lilac berries. The fact that the berries and stones are regurgitated explains why Dr. Ellie Sattler never finds traces of them in the animal's excrement.

The Dilophosaurus's venom-spitting and neck-frill became so iconic that almost every other appearance of the animal in popular media, as well as most of the Dilophosaurus children's toys advertise at least one or both of these aspects. Some even leave out the dinosaur's striking double-crests. In reality, however, the spitting ability was made up by Michael Crichton, while adding the frill was Spielberg's idea. Real Dilophosaurus possessed neither of these traits, with the twin crests and its thin jaws (the latter of which isn't very evident in the movie's design) being its real discerning features.

Jurassic Park: Shortly after Nedry makes his first appearance in the control room, during his argument with Hammond, one can clearly see Jaws playing in a small video window on one of Nedry's computer screens. That movie was, of course, also directed by Steven Spielberg.

Jurassic Park III: When the paleontologists enter the bar for dinner with the Kirbys, you can see a Jurassic Park (1993) pinball machine in the background.

Jurassic World: The great white shark being eaten in Jurassic World is a clear homage to Jaws.