Sims 3 Supernatural background sounds on full moon night

Hey everyone, I was randomly on Isla Paradiso, outside of hospital and it had just turned full moon, after the initial Wolf howl, I started hearing all the creepy sounds of night that I have never heard before, followed by more wolf howlings and some screeching through out the full moon night. Tbh.. in all the years of owning this pack I have never heard the background sounds like such while playing Sims 3 Supernatural. It made the full moon event even more exciting with these background sounds… shortly after I changed town to Moonlight falls and never heard background sounds again after the initial Wolf howl with a notification pop up…. Does anyone else know of this or is my game glitched to never play these sounds except this one time… lol

Any advice or comments would be much appreciated thank you!