"JAWS" THE MOVIE - FUN FACTS AND TRIVIA!

There were three identical mechanical sharks used in filming, and they malfunctioned constantly. Because the sharks were not tested in water before filming, the first one sunk as soon as it was put in the water. The crew that worked on the film took to calling it "Flaws" because of all of the on-set trouble. 

• After Robert Shaw finished filming his scenes as Quint, he had to flee to country to escape the IRS. Ironically, Shaw was the second choice for the role and was given the spot after the first actor selected had to leave the country to escape his IRS problems. 
• Roy Scheider didn't believe that the crew would save him if something went wrong when he filmed his scene on the sinking Orca. He hid axes at various spots around the boat in case he needed to use them to save himself. 
• Spielberg's own dog played the role of Brody's dog. 
  
• One of the mechanical sharks used in the movie was lost at sea during filming. 
• The movie was supposed to feature many more shots of the mechanical sharks, but they broke down so much that Spielberg was forced to change his plans and use shots from the shark's perspective instead of actually showing the shark. In retrospect, the director believes that this change made the movie much scarier. 
• The scene featuring the death of character Alex Kintner had to be re-shot because the film rating's board said if it stayed in the film as it was, they would be forced to rate the movie R instead of PG. 
• Robert Shaw and Richard Dreyfuss did not get along and fought often on set. 
• When Shaw showed up to film the scene in which he tells the story of the Indianapolis, he was too drunk to deliver his lines and instead kept going off track and talking about his family. The scene had to be redone the next day, and he got it in one take. 

Source: movies.lovetoknow.com