I think its fair to say there is no science behind the dogs.
if you google "dna" or "fingerprints" you will get literally hundreds of thousands of scientific articles to support them.
re the dogs and cadaver scent, probably little or nothing in any reputable scirntific journal. The dogs are used to find physical evidence, they didn't find any. if the dogs responses are so reliable why are SY saying Maddie may still be alive.
DNA and fingerprints have been around for donkeys years, cadaver dogs have not. There are scientific papers in *reputable* journals and there are other studies by police dog divisions which show their reliability in detecting remnant scent. Cadaver dogs are not * just*used to find physical remains. They are also used to find remnant scent. If what you say were true they would never have been deployed by Harrison in PDL in the first place.
Science in a general cant back up cadaver dog alerts as there is no instrument or test to do so, thats why the dogs acute natural abilities are used.
The dog alert did not prove in any way that Madeleines body was in that apartment. It is a circumstantial possibility. That is why SY have said there is no* clear definitive proof* she is dead, ie via the dog indication or a body being found, so obviously he is going to say there is a possibility she is alive.