Dogs for Diseased Human Tissue

Often a questionable exercise in practical terms.

It was in the 1960s that Karenswood (International) Ltd first offered the possibility of dogs being used for the detection of diseased human tissue. 
The idea received a warm welcome from some, whilst at the same time causing raised eyebrows in others. 

There is a great deal more to say regarding the perceived need and the practicalities of training dogs for the detection of diseased human tissue. One of the many problems that is widespread concerns 'method'. Methods used by some end users have not produced reliable results  -  it is a significant point and there remains a lack of compelling evidence of infallibility.