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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 adaptation that has been honed over millions of years, allowing zebras to thrive in their natural habitat. In the wild, the ability to mount a rapid stress response can mean the difference between life and death for a zebra. However, while the stress response is beneficial in the short term, chronic stress can have negative consequences for zebras. In the wild, zebras are constantly on alert for predators, which means that they may be in a state of chronic stress for extended periods of time. Prolonged exposure to stress hormones can take a toll on the zebra's body, leading to a range of health issues. Chronic stress can weaken the zebra's immune system, making it more susceptible to infections and diseases. It can also impact the zebra's reproductive system, potentially reducing its chances of successfully reproducing.- While the stress response is essential for zebras to escape predators in the wild, chronic stress can have detrimental effects on their health and well-being. By understanding the physiological mechanisms behind the stress response in zebras, we can gain insights into the complex interplay between stress and survival in the natural world.
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