"When the dog indicates in the field, it will either be, human decomposition or human blood.
Human decomposition is very persistent, very pungent, to the point where we've been able to locate, in blind searches, graves 40 years after the body has been removed and the body was only there for a short period of time.
With blood, crime investigators have been to the house and somebody has cleaned the blood up to the point where nobody can see it, that doesn't mean there isn't any there to find. With floorboards, some blood might drip through the gap and run around the back of the floorboard which won't be able to be seen but it will still be there. But odour will still be coming through the gap in the floorboards and the dog will be pick it up and be able to respond to it.
The FBI invited me over to America and we assisted with the development of their canine program and they were quite sceptical about the blood dog at the time. And they got 12 identical pieces of cloth and they put a tiny spot of blood in the centre of one of the cloths. They washed it 3 times I think and they put them in a line out for me when I got there and said, tell us which one it is? Keela went up the line and not only identified the right cloth but the exact spot."
Martin Grime
