I think the parents should have been aware of the infestation, rat's don't typically eat people out of the blue to the best of my knowledge, but that does nothing to help the child afterward.
Rats will attack anything defenseless.
Agreed. I guess this is for my own selfish comfort. I want to think there were some warning signs which might have prevented the tragedy, whether the parents might have known about them or not. There is something very discomforting about a tragedy that happens "out of the blue" as another poster said. Years ago I read the book, Helter Skelter, about the Manson "Family" and what disturbed me most was the randomness of the choice of victims. I like to fool myself that I can avoid most tragedies in my own life if I am attentive to warning signs or obvious risks. (Yes, I know that is a fools' errand, but I try to imagine I can prevent sorrows in most cases.) I don't mean to impugn the parents, just what are the signs of rat infestation? Or are there none?