What potential risk might occur if a pig runs off in fear?

The scenario of a pig running off in fear presents various risks, and the correct choice highlights a significant consequence associated with such behavior. When a pig flees due to fear, it's probable that it may not be able to regulate its body temperature effectively, especially in a stressful situation. The adrenaline released during fear can lead to increased heart rate and metabolic activity, potentially causing overheating in an animal that is not accustomed to high levels of stress.

In a state of panic, pigs might lose their ability to find shade or cool water, further exacerbating the risk of overheating. Therefore, understanding how stress affects a pig's physiological responses is crucial for ensuring their health and safety.

Although the other choices also identify important risks, they do not address the immediate physiological impact of fear-related flight response in pigs. For instance, while a pig may indeed cause injury to other animals or escape from its enclosure, the direct link to overheating due to panic-induced stress is particularly relevant in the context of animal welfare and health management. Stress-related health issues are also a consequence of fear, but overheating can arise more immediately during a frantic escape.