Which symptom might indicate pain in an animal?

Restlessness is a common symptom that may indicate pain in an animal. When animals are in discomfort or pain, they often exhibit behaviors that suggest they are unable to find a comfortable position. This may lead to frequent shifting of positions, pacing, or other signs of agitation. Unlike increased energy or heightened curiosity, which typically signify a state of well-being and engagement with their environment, restlessness specifically suggests that something is wrong.

Additionally, normal sleeping patterns indicate comfort and a lack of distress; if an animal is sleeping normally, it is less likely experiencing significant pain. Hence, restlessness stands out as a key indicator that an animal may be suffering from pain or discomfort, prompting further investigation or intervention.