What happens to a hypothermic animal when actively warmed?

When actively warming a hypothermic animal, it is crucial to maintain a careful and controlled approach to avoid causing harm. The correct understanding here is that the animal is at risk of being burned by heating devices if they are not monitored closely.

In a hypothermic state, an animal's body has been exposed to cold temperatures, which can impair its normal physiological responses. Rapid rewarming, especially with heating pads or other heat sources, can result in superficial burns or tissue damage. This is because hypothermic animals may have reduced sensation and thus may not respond to heat exposure in the same way a healthy animal would. This underscores the importance of gradual warming combined with careful observation.

Furthermore, while some of the other options may seem plausible, they do not accurately reflect the appropriate response to an actively warming hypothermic animal. For instance, while an animal's core temperature will eventually rise as part of the warming process, it should happen gradually to avoid shock or injury. Similarly, the animal may not instantly become more alert, as physiological changes may take time to facilitate increased alertness. Continuous monitoring is essential during the warming process to ensure the animal’s safety and well-being.