Did snakes help us evolve good vision?

Why can primates see so well? Why did you jump back - even just a bit - when you saw this picture?

The answers might be the same - scientists look at the primate brain's reaction to snakes (even primates who never see them) and how being able to see a venomous snake in the wild might have helped primate vision: The Monkey and the Snake: How the Primate Brain Reacts to Serpents one of my blog posts on National Geographic.

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