What might indicate that a pet is in pain?

A key indicator that a pet is in pain can be observed through changes in behavior, such as unusual aggression or withdrawal. Pain can manifest in behavioral changes because animals may react defensively if they feel threatened or vulnerable due to their discomfort. This may lead to a more aggressive demeanor, particularly if they feel that their pain is provoked by interaction. Conversely, some pets may withdraw and seek solitude, avoiding interaction with people or other animals as a coping mechanism for dealing with their pain.

The correct answer emphasizes the behavioral changes that may arise from pain, which is crucial for recognizing distress in pets. It's important for veterinary assistants to observe and interpret these behaviors accurately, as pets often cannot vocalize their discomfort.

In contrast, the other options do not reliably indicate pain. An increased appetite and energy often reflect wellness rather than distress, excessive grooming may suggest anxiety or skin issues rather than pain, and normal behavior patterns typically reflect a state of health. Recognizing the differences in behavior is essential for assessing a pet's well-being.