If a cat’s head shakes during sleep, it may be because it feels cold and lacks trace elements; if a cat’s head usually shakes and its eyes are round and drooling, it should be epilepsy; if there are no other symptoms when the head shakes, it may be a lack of vitamins and Calcium. In addition, if you find that your cat’s head is shaking and accompanied by symptoms such as loss of appetite, loss of energy, and reluctance to move, it should be caused by physical disease. At this time, you should take it to the pet hospital for examination.