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Zebras release stress hormones to escape predators from "summary" of Why Zebras Don't Get Ulcers by Robert M. Sapolsky
In response to a predator, a zebra's body releases stress hormones. These stress hormones prepare the zebra for a sudden burst of energy, enabling it to escape from the predator. The release of stress hormones triggers a chain of physiological responses in the zebra's body. Blood is diverted from non-essential organs, such as the digestive system, and is redirected to the muscles, providing the zebra with the energy needed to run for its life. At the same time, the zebra's heart rate and blood pressure increase, further enhancing its ability to flee from danger. The stress response in zebras is crucial for their survival in the wild. By releasing stress hormones in the face of danger, zebras are able to react quickly and effectively to threats from predators. This physiological response is an evolutionary adaptat...
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