The growls are said to be similar to that of a lion or a dog, which is strange because there are no animals in GTA IV, besides flying rats and seagulls. Others say that the growls come from a ghost that resides inside the Casino. The only possible explanation for the growls is the echoing sound of flying rats, thunder from a storm, or it could be one of the hobos who lives and sleeps in the Old Casino. Players said that they also heard random metal rattling, ghost whispering and the sounds of a rattling door knob.
The building in question is in poor condition, making it very likely that all of these noises were intended just not in the way most people think.
- Whispering is most likely from either the water or the Hobos.
- Metal rattling is completely intentional, and is to give the effect of a structure that is in desperate need of repair.
- Rattling door knob is either some random effect/noise that has been taken out of context.
- The growl comes from the metal decay, and has been taken out of context.