If they’re hungry-and they usually are-you can count on them to chase and attack anyone and anything they might construe as food.
They may lash out if you invade their space, and they’ll defend themselves if cornered, but most of the time, they’ll mind their own business.
They also fall into two main categories, plus one variation:
Most of these ancient beasts are dumb brutes, with extraordinary Strength and Constitution and rock-bottom Intelligence. “Sophistication” is not the word that leaps to mind when discussing the battle tactics of dinosaurs.