Changes in appetite or drinking habits
Vomiting or diarrhea
Lethargy or unusual tiredness
Coughing, sneezing, or trouble breathing
Limping, stiffness, or difficulty moving
Shaking, trembling, or seizures
Excessive scratching, licking, or hair loss
Bad breath, drooling, or mouth pain
Swollen belly or signs of pain
Fever or unusually warm ears/nose
Pale, blue, or yellow gums
Eye or nose discharge
Sudden weight loss or gain
Changes in urination or bowel movements
Behavior changes such as hiding, aggression, or restlessness
Whining, yelping, or signs of discomfort
Not responding normally to you
Collapse or inability to stand