Dogs are amazingly good at detecting things like cancer in double blind experiments. There are good reasons to think dogs can detect lots of things. That's not

Dogs are amazingly good at detecting things like cancer in double blind experiments. There are good reasons to think dogs can detect lots of things. That's not the problem: 1. No MD would order cancer treatment on the basis of a dog's sniff. 2. Analysis of all kinds of evidence, including the use of sniffer dogs, should not be managed by police departments, or even prosecutors. There have been many scandals of police evidence handling, even by supposedly professional evidence labs, have mishandled evidence and innocent people have been imprisoned. There needs to be independent analysis of evidence, incentivised to find the truth even if unfavorable to police and prosecutors. 3. Cops lie.