Here is a picture of a dinosaur from the Triassic sub-period (Apatosaurus). It is called an Apatosaurus, it has two brains! One was in its head and the other was near the bottom of its tail. Message sent from the brain in its tail didn’t have to go to the headfirst before the animal moved or do what it needed to do. Can you imagine having two brains? How do you think they coordinate so they don’t cross each other?