fabgod
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Grime and Harrison both write EVRD - enhanced victim recovery dog which was Eddie. I think you are getting confused with keela who was the CSI dog.
mark harrison states (http://www.mccannfiles.com/id293.html) that the evrd will locate very small samples of human remains, bodily fluids, and bood.
Martin grimes states "'eddie' the enhanced victim recovery dog (e.v.r.d.) will search for and locate human remains and body fluids including blood in any environment or terrain." http://www.mccannpjfiles.co.uk/pj/martin_grimes.htm
the [B]evrd is trained using whole and disintegrated material, blood, bone tissue, teeth, etc. And decomposed cross-contaminants. The dog will recognize all or parts of a human cadaver. He is not trained for 'live' human odours; no trained dog will recognize the smell of 'fresh blood'. they find, however, and give the alert for dried blood from a live human being.[/b]
The EVRD will not alert to live bodily fluids, Mr Grimes states that he (Eddie) will have been proofed off bodily fluids, so in other words he is trained to tell the difference between live and cadaver, therefore will not alert to live.
Once blood or bodily fluids are decomposing they are no longer live, so therefore the (live)bodily fluids the dogs are trained on (and proofed off) are eliminated from its alert condition.