Many fans were thrilled when they saw the official trailer of "Jurassic World", but one person seems to be unhappy and that is the lead star of the movie. Chris Pratt admitted that he isn't fond of the trailer and revealed what his reason was. Could it be the unrealistic dinosaurs?

We reported last time that some scientists were not impressed with the dinosaurs shown on the website and the official trailer. Darren Naish said, "I'm just disappointed, as are many other scientists and researchers, that they've deliberately chosen to portray old school dinosaurs designed to mimic those of the original Jurassic Park."

The zoologist added, "It's lazy and makes it look as if they wanted to stick to what they think is safe. Yawn." However, that is not the reason why Chris Pratt originally hated the trailer. The 35-year old actor told Vulture that he wasn't happy about his own performance.

He said, "I'm just like, 'Aw, why did I do that with my eyebrow?'" Pratt explained, "Unfortunately, it was one of those things you do as an artist where you're hypercritical about it the first time you see it. I had to take a couple steps back and keep watching it before I was like, 'Oh my God, that is really good.'"

The screen heartthrob added, "So it took me two or three times seeing it before I knew it was great, but that's how I was with Guardians of the Galaxy, that's how I was with The Lego Movie, that's how I am with everything I'm in."

Despite initially doubting his performance, Chris Pratt assured "Jurassic World" fans that the sequel will be awesome. He said, "The movie's gonna be ten times better than the trailer." I guess we will just have to wait until June 12, 2015 to see if it will be epic just like the previous "Jurassic Park" movies.