Although some other problems may not be life-threatening, they may be
causing your pet pain and should be taken care of without delay. Signs of
pain can include panting, labored breathing, increased body temperature,
lethargy, restlessness, crying out, aggression and loss of appetite. Some
pets seek company when suffering, while others will withdraw.
When in doubt, err on the side of caution, always. Better to be wrong
about a minor medical problem than to have a pet who becomes critically ill because you
guessed wrong about a major one.