Which observation might suggest that an animal is in pain and requires postoperative analgesia?

An unusual posture in an animal can be a significant indicator of pain and may suggest the need for postoperative analgesia. Animals often exhibit altered body positions or reluctance to move in ways that they typically would when they are experiencing discomfort. For example, a common sign is hunching or curling up, which may indicate abdominal pain, or guarding a particular area of the body after surgery. Recognizing these changes in posture is crucial for timely intervention and ensuring the welfare of the animal.

Normal activity levels typically suggest that an animal is comfortable and not in pain, as animals tend to reduce their activity when they are experiencing discomfort. Increased vocalization can indicate distress or discomfort, but it does not always correlate directly with pain severity. Changes in appetite can also be a response to various factors, including stress or illness, and may not specifically indicate pain. Thus, unusual posture stands out as a more direct indication of potential pain, warranting further assessment and possible pain management strategies.