Yeah they made up a bunch of plausible stories on certain dinosaurs.
I'm being a total nitpick, but I'm refering mostly to the "mannerisms" of these animations They're too human, like "rawr? aaah, rawr!" *nods dinosaur head!*
Animal body language is very difficult to just guess though. Lion King, the new Planet of the Apes movies, King Kong, they all managed such good results by meticulously studying the real animals for months on end. With extinct animals, that is not really an option...
With fiction, it's easyer to get away with it anyway, like Jurassic Park and T. rex's "power-roar!"-poses through half the movie. There is very little reason that a real, living T would walk around roaring like that (there's even interpretations of internal skull, brain cavity etc, suggesting it made "bleepy"-sounds, like a big, fat bird, and would sound absolutely ridiculous in real life. Not very fit for the rainy climax in JP)
Zeg are you cute?
of course