Dinosaurs BehaviourDinosaur Quirks |
Encephalization Quotients for Modern Mammals |
The encephalization quotient (EQs) for some typical mammals are based on the same formula as the dinosaurs: The ratio of the brain to body weight. Here are a few EQs of some well-known mammals:
| Mammal | Animal Type | EQ |
| Human | primate | 7.4 |
| Bottlenose dolphin | cetacean | 5.6 |
| Bluenose dolphin | cetacean | 5.31 |
| Chimpanzee | primate | 2.5 |
| Rhesus monkey | primate | 2.09 |
| Cat | carnivore | 1.71 |
| Langur | primate | 1.29 |
| Squirrel | rodent | 1.10 |
| Rat | rodent | 0.40 |