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Since dogs could hear and smell better than men, we could concentrate on sight. Since courage is commonplace in dogs, men's adrenal glands could shrink. Dogs, by making us more efficient predators, gave us time to think. In short, dogs civilized us.
Donald McCaig
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Since dogs could hear and smell better than men, we could concentrate on sight. Since courage is commonplace in dogs, men's adrenal glands could shrink. Dogs, by making us more efficient predators, gave us time to think. In short, dogs civilized us.

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