No, your webkinz cannot die, but it does get very sick. It will also be sad if you don't visit it. Your webkinz will have an ice pack on its head, and a thermometer in its mouth if it is sick. You can try to feed it something, play with it, or try to cheer it up. If that doesn't work, get your webkinz medicine or viatamins at the WShop, or take your webkinz to the doctor.