Regarding the mange thing, I am not a vet, but was told by mine that there are 2 types of mange, one that can be spread, one that can't. My dog had the non-spreadable form that emerges typically in puppies or at a time when the animals immune system is low. She didn't catch it from any where, as it emerges from a skin mite already present, just unable to be controlled by the dogs system. It's treatable,and costly and a pain.
The other mange is typically the one seen among wild critters, and can be fatal to them, and spreadable. I can't comment on the validity ofwhether it can spreadto humans or not.