Page 29 - Everything You Know About Dinosaurs is Wrong

Although the size of an animal’s whole brain is important, measuring the sizes of different parts of the brain can also help biologists understand how good dinosaurs were at different jobs.
Some dinosaurs that ate a mixed or plant-based diet, like the ostrich-like H A R P Y M I M U S , had
very small olfactory bulbs. These are the
parts of the brain which sense smells and
it meant they could only eat food from plants which were easy to find.
BUITRERAPTOR had much larger olfactory bulbs. These are bigger in animals with a brilliant sense of smell, like predators (which hunt other animals) that need to sniff out the animals they eat (their ‘prey’).
Later theropods, like Z A N A B A Z A R , had large brains and would have been great at problem-solving.
Although dinosaurs’ brains weren’t anything like as complex as mammals’, having a bird-brain still meant dinosaurs would have been capable of some amazing behaviour. After all, modern-day birds can move together in flocks of thousands, migrate between countries without getting lost, mark their territories with intricate songs, and some can even make simple tools out of twigs . . .
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