We Evolved Pretty Quickly

Interesting. I have heard that there was a small species of dinosaur that had a physical stature and brain capacity comparable to chimpanzees. Hmmmwhere was that, a new scientist article I think,,have to look it up. There are differences in mammals that give a little advantage in the development of intelligence. Namely the quality of continuous eye tracking, absent in all other animals. It requires enormous brainpower in the visual cortex, yes mice have huge brain in this respect compared to comparably sized lizard