Dinosaur intelligence is also a recurring topic here and there, and the truth here is that they were likely quite dumb.
As with most popular science, media likes to blow things out of proportion, to the point of door-opening raptors in Jurassic Park.
<pedantic>There is a lot in the books that did not make it to the movie. For instance the dinosaurs are not real dinosaurs, but fully modern GMO's with a dinosaurian base. The DNA extracted from the amber was far too damaged to create real dinosaurs, so they looked at other genomes and matched the "holes" with "patches"--lines of DNA from modern species that could be lined up on either end with the edges of the "hole" in the dinosaur genome. I think the movies might mention this, but I'm sure we don't hear about anything except frogs. There is also a process of trial and error in the production of a neo-dinosaur species. All throughout the book we have little episodes where "dinosaur" behavior is seen as analogous to the behavior of modern animals, even animals not in their lineage. Going back to the raptor example, one of them near the end wipes its mouth like a human does. </pedantic>
I know :] Got the book :]
And yeah, that's what I mean, it's easy for us to think raptor = dog, brachiosaur = cow, both references are done in the movie (door opening, like a dog. grant telling lex "it's like a big cow"), it makes sense also, cus, what else do we have to compare with?
But, in entertainment it's okay. We dont want to leave the audience totally confused either. In reality tho, we must accept that things are not narratively convenient.
For example - Raptor dinosaurs evolved from birds. How narratively inconvenient is this? Peoples brains explode.
But it's true, well, depending on how you define things. But the big, scary, toothy, clawy raptors evolved from tiny, poofy, flying dinosaurs (that are techically "not yet" birds, but that are also the ancestors of birds, as well as troodontid and oviraptorid dinosaurs). This is a very recent idea, and refers to "secondary flightless dinosaurs".
There are more secondary flightless avians during the dinosaur age, such as Argentinean Patagopteryx, which was a bipedal running... dinosaur... that would traditionally be considered a bird, "not" a dinosaur, but since birds are dinosaurs, its a dinosaur - that can't fly! Like most dinosaurs! But one that descends from birds (dinosaurs) that CAN fly! *brainmelt*
Galliformids (chicken) were also allready present at the end of the cretaceous. Meaning you would be able to spot small, feathered dinosaurs, with toothed beaks, and small claws on their wings, run alongside small, feathered dinosaurs, with toothless beaks, and clawless wings. Both are dinosaurs, but one is traditionally not counted as a dinosaur, while the other is. It's all very brain-twisting - unless you just accept that nature goes back and forth like that