The closest Jee and Aee have come to a dinosaur obsession (a relatively normal preschool to early elementary phase) was this:
Mom: "You are being tyrannical." (to a child throwing a fit)
Jee: "Tyrannical as in tyrannasaurus rex?"
(discussion about how and why the dinosaur was pegged with that particular root word)
That's it. That's all the dinosaurs they needed / wanted.
These days, "You're being tyrannical" is one of our favorite phrases. It has such a funny ring to it and it seems to diffuse any tension. You can't say, "You're being tyrannical" and still keep a frown on. It just isn't possible.