In the movie Jurassic Park, dinosaurs are cloned via DNA recovered from prehistoric mosquitos.  According to the paleontologist who worked on all the Jurassic Park films, it's not quite that simple.

It's possible though, and he expects to see it happen within five to ten years.

Jack Horner says the whole "recovered DNA" idea won't work because DNA starts breaking down as soon as cells die so, he plans to use birds to bring back dinosaurs. Birds are the most direct dinosaur descendants on earth today but, somewhere along the line, wings evolved, tails disappeared and snouts became beaks. Horner says a way to "reverse engineer" this process will be perfected, and a dinosaur cloned, within the next decade. He's not alone, a pair of scientists from Havard and Yale recently announced they've figured out how to turn chicken beaks back into dinosaur snouts.

Pet dinosaurs? Maybe.