A system includes a main body worn on an animal, a physiological sensing module generating a physiological signal associated with the animal, a processing module receiving the physiological signal, performing an analytical procedure thereon for obtaining digital data associated with an emotional condition of the animal, and outputting a drive signal, and an indication module receiving the drive signal and outputting an indication message accordingly. A health condition of the animal is recognized by comparing the digital data and predetermined reference data and when the health condition is determined to be abnormal, the indication module is controlled to output a notification message.