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Sure, but that's one particular dog. I'm asking about the statistics for all of the drug dogs in the US.

I agree if a particular dog is wrong more than 10 - 20% of the time, the dog and/or the handler should be taken off of the job. And I agree that they probably shouldn't be allowed to be used by police unless they already have probable cause through some separate means.

Why was this comment downvoted? It's a very legitimate and relevant question.

I think it was seen as me slyly trying to defend the use of drug-sniffing dogs. I'm really not; I was just curious about the data, and wondered how much variation there might be.

It's interesting to see the difference in testing between the US and Europe (or NL at least) - here getting 60% correct is a passing grade (usually 50% is the minimum)

I had a class in college where a 40% curved to a B.

But yeah, the drug dogs are an end-around of the 4th Amendment.