I saw some shit about this on TV. It's hard to believe, but some people have some crazy stories about it. There is a way that the human body can burn all the way down to nothing, it's called the wick effect where the fat keeps burning for hours. The crazy shit is that there will be a big ass burn on the floor but it will not burn the house down even though there is a bunch of combustable material near by. This one cat was sleeping and he said he felt hot and when he got up and looked at his leg it was all black and like charcoal.