The on-screen raptors were created using several production methods, including animatronics by Stan Winston and CGI by Industrial Light & Magic (ILM).
In Crichton's original novel and the film adaptation, dinosaurs have been genetically engineered by InGen for a theme park on the fictional Isla Nublar.
In Jurassic World, Blue is the oldest of the four Velociraptors trained by Owen Grady for a research program on Isla Nublar, the site of a new theme park.
Blue is free to roam the island after staff and visitors evacuate, leaving her as Isla Nublars last surviving raptor.
Three years later, in Jurassic World: Fallen Kingdom, the dinosaurs on Isla Nublar face extinction from an impending volcanic eruption.
After an operation to save her life, Blue is transported to Lockwood Estate in northern California to provide a blood transfusion to the Indoraptor.
[6][7][8] In addition, the revamped version of the Jurassic Park ride in Hollywood features Blue as a supporting character who is sent by Owen to rescue the visitors, appearing at the climax to guide them to an escape path.
[22] The Utahraptor, however, was a more accurate dinosaur in size comparison to the franchise's Velociraptors; it was discovered shortly before the 1993 release of Jurassic Park's film adaptation.
[28][29] Like their fictional counterparts, real raptors are believed to have been intelligent,[10] although paleontologist James I. Kirkland, who discovered Utahraptor, considered this trait exaggerated in the films.
[31][32] Like their real-life counterparts, the franchise's raptors have a large sickle-shaped toe claw, although it is debated whether this was used for disemboweling prey, a characteristic referenced in the novels and first film.
Director Joe Johnston said "it's not completely outlandish that a raptor using soft tissue in its nasal area could produce some kind of sound and communicate in much the same way that birds do.
For the third film, the appearance of the male raptors was updated to depict them with a row of small quills on their heads and necks, as suggested by Horner.
[38] Jurassic World received criticism for its outdated depiction of featherless Velociraptors,[39][40][41] a design choice that was made to maintain consistency with earlier films.
[51][52] In The Lost World: Jurassic Park, a mechanical version of the raptor was created by Winston to depict the animal's upper body.
[54] Velociraptor animatronics by Winston were again used for Jurassic Park III,[37] and a partial raptor suit was also made for a scene depicting the death of Udesky.
By 2004, writers William Monahan and John Sayles had written drafts that featured Nick Harris, a former mercenary who takes a job training a team of five Deinonychus to go on missions.
[58][59] When Colin Trevorrow joined the project as director, he felt that the plot aspect of trained raptors was too extreme, as it depicted the animals being used for missions.
[71][72] For Fallen Kingdom, Neal Scanlan's team created a Blue animatronic that was laid on an operating table, for a scene depicting the animal after an injury.
[74] The animatronic was made of foam latex skin built around a skeleton-like frame controlled by a combination of cable systems, rods and, in the case of some of the smaller areas of movement, radio signals.
[75] Actress Daniella Pineda, who portrayed Dr. Zia Rodriguez in the scene, said about the animatronic: "It would sweat, its eyes would dilate if hit by light, it had pulsing veins, it felt like reptile skin.
[80] The various raptor vocals in the first film were created by combining the sounds of dolphin screams, walruses bellowing,[81] an African crane's mating call and human rasps.
[87] The film adaptation of Jurassic Park popularized Velociraptor among the general public,[88][89][90] and led to the naming of the Toronto Raptors, a professional basketball team formed in 1995.
[93][94][95] Mick LaSalle of SFGATE praised the raptor sequence in The Lost World: Jurassic Park, in which the animals terrorize humans at an InGen worker village.
[96] Owen Gleiberman of Entertainment Weekly found the sequence "nicely done, with some vivid, funny moments" but also "less ingenious than the first film's choreographed kitchen showdown".
Vary of Entertainment Weekly wrote of the raptors, "We're meant to be wowed by their lethal intelligence, but all I could think of was how routine their prancing quick-draw movements had become.
[98] Matt Goldberg of Collider later wrote in 2015 that "whereas Spielberg conveyed the raptors' intelligence by showing their attack patterns, Jurassic Park III is overly excited to let you know they can vocally speak to each other, which ends up just looking funny.
[99] Justin Harp of Digital Spy wrote that Johnston "deserves much credit for reinventing the threat of the raptors in such a genuinely nerve-thrashing way".
[101][91] Ian Cardona of Comic Book Resources described Blue as "the Jurassic Park franchise's most important character", beating out Owen Grady, Alan Grant, and Tyrannosaurus rex.
[103] Likewise, John Orquiola of Screen Rant wrote that the attempt to "make Blue into a heroic and sympathetic" character "goes against everything we know about Velociraptors from Jurassic Park".
"[105] Gleiberman, reviewing Fallen Kingdom for Variety, called Blue the most anthropomorphic dinosaur in the film, describing her as "a keenly intelligent specimen who, with her slight smile, looks like a cross between a domesticated T. rex and E.T.