I think this sound effect was taken from Metal Gear Solid 3 Snake eater. Its used when the shagohod falls from the collapsing bridge during the boss fight
That fredbear makes me want to Die and i beat five nights at fredbears family diner 1 damm five nights at fredbears family diner 2 remake they had a better model and the first five nights at fredbears family diner 1 remake they had a better model oh my god this is so weird but damm! i like the senod game the most its hard the senod game