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Male monkeys looking for a good time might benefit from spending a bit longer getting to know a potential mate.
The tendency to perceive others as "us versus them" isn't exclusively human but appears to be shared by our primate cousins.
The basic economic theory that people work harder to avoid losing money than they do to make money is shared by monkeys, suggesting this trait has a long evolutionary history, according to a Yale University study under review by the Journal of Political Economy.
- a slit in a tire to drain away surface water and improve traction.