Hotpoint RGB745 Gas Kitchen Range "oven high pitched sound" Questions

oven our golden retriever freaks out and is terrified even more than by fireworks. Any ideas about possible high-frequency noise coming from ovens. The range is not a high-tech one - just $400. range.

...oven when the F2 signal flashed on in our clock display. Simultaneously, the stove began to emit a very high-pitched sound that resembles the ringing in your ears. Well, we have done everything from ...