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Ancient Origins of Necking and Biting Behaviors
The study indicates that tactile behaviors among chimpanzees and bonobos, such as hugging, gripping hands, and inserting fingers into each other's mouths, play a significant role in reducing stress and enhancing trust and cooperation among the animals before eating. It has been shown that these behaviors contribute to the regularity and readiness of the apes to eat together and help decrease conflicts. Additionally, the study revealed that finger-in-mouth behaviors are signs of trust, especially among males, reflecting the roots of cooperation and social communication in humans. This behavior has evolved over millions of years and remains an important means of maintaining harmony.
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