It is normal for a cat to have its eyes open when it dies. Most cats have their eyes open when they die. This is because the cat cannot let the eye muscles complete the action of closing the eyelids before death, so the eyes are open. . Before the cat dies, it will also have symptoms such as difficulty breathing, listlessness, thirst, slow movements, elevated body temperature, and unresponsiveness. It is best for the owner to be prepared in advance.