7 The velociraptor’s most terrifying sound is a combination of the sounds of a dolphin and a walrus.

8 The makers of Jurassic Park had designed a human-sized Raptor (normally <2 ft tall) in 1990. In 1991, a “super-slasher” Raptor skeleton 5.5 feet tall was discovered in Utah. “We designed it, we built it, and then they discovered it.”

For a brief period after its discovery, Spielberg’s name was considered for naming the raptor, which later came to be known as the “Utahraptor”.(source)

9 The paleontology advisor on Jurassic Park is now involved in trying to reverse evolve a chicken into a dinosaur.

Jack Horner is an American paleontologist credited with discovering the Maiasaura, and was also the paleontology advisor on the set of Jurassic Park. At the moment, he is involved in “nudging” the DNA of a chicken to try and reverse evolve it into a dinosaur.(source)

10 The Jurassic World velociraptors looked like this during filming, before CGI was added:

Which, once the picture was released on the internet, was the cause of many laughs.(source)

11 Dinosaur teeth were added into the movie scenes to show what it would really be like.

Paleontology advisor on set, Jack Horner said, “Every once in a while, there’s a tooth laying around. We know dinosaurs can replace their teeth through their life, so they would’ve left teeth embedded in things.”(source)

12 “Jurassic World” broke the records of “The Avengers” and “Harry Potter and the Deathly Hallows- Part 2” for the biggest opening in movie history, with a U.S. debut of $208.8 million and a $315.6 million overseas debut.

“The Avengers” debuted at $207.4 million in the U.S., while the final installment of the “Harry Potter” films had an overseas debut of $314 million; “Jurassic World” surpassed both of them.(source)