A method of assessing the well being of an animal is disclosed. The method comprises obtaining information as to movement characteristics of the animal before applying medical treatment to the animal； obtaining information as to movement characteristics of the animal after applying medical treatment to the animal； comparing the movement characteristics of the animal before applying the medical treatment with the movement characteristics of the animal after applying the medical treatment and identifying differences between these； and assessing the differences and, based on these, determining whether the well being of the animal is improving as a result of the treatment.
