By this means, they signal their level of aggression or readiness to mate.
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Related: aggression
Prev: If AI does eventually prove to be our downfall, it is unlikely to be at the hands of human-shaped forms like these, with recognisably human motivations such as aggression.
Next: People decide whether they will act aggressively or not on the basis of factors such as their experiences with aggression and their interpretation of other people's motives.
