Well, I have a smooth-top electric stove and I also have cats that like to hop up on my counters when they think I’m not looking. I keep two (attractive) tea kettles on my stove at all time, and I have gotten into the habit of putting the kettles over a hot burner so that my cats don’t accidentally burn their paws. If it starts whistling a little bit later, I know that I forgot to turn off the burner.