To know if a dog is in pain, observe both behavioral and physical signs. Behavioral changes may include reluctance to play or go outside, hiding, irritability, whimpering, excessive licking of a body area, and changes in appetite or sleeping habits. Physical signs can be limping, slow or refusal to walk, difficulty lying down or getting up, shaking or trembling, abnormal posture, and increased panting. Dogs in pain might also show changes in facial expression, guarding behaviors, or difficulty jumping on furniture or stairs. Because dogs often hide pain, subtle changes in normal behavior or physical movement are important clues. If pain is suspected, a prompt veterinary consultation is essential for accurate diagnosis and treatment.