Texana
Overreaching
I love dogs and trust dogs but I am skeptical of cadaver dogs picking up on a scent. When it works to finding a body I think what special, wonderful creatures but when it comes to picking up on a scent of a body and no body is found I have to put that aside as 'real' evidence.
For generations these dogs have been bred both in Britain and the U.S. to be trackers and earn their keep--My father is old school Depression era, and I can tell you that any animal that did not and does not "earn" its keep was an animal that at best, is/was not bred to other animals, and at worst, is/was an animal that does not last long.
Consequently, the dogs that are the best of the tracker dogs now, are typically the result of generations of breeding to maximize the survival skill of tracking, be that downed game or escaped slave. I know that sounds harsh, but that's the reality for generations of past breeds. I'm sure it's somewhat different now for owners, but still only the dogs that can prove themselves successful at tracking are the dogs that will get hired for these jobs.
The dogs that would be brought in a high profile case like this would be dogs with high success rates in the past that would justify the pay to their owners and the keep for the dogs.
I believe the dogs in this case would be more reliable witnesses than someone like Jane Tanner, who in twilight/approaching darkness claims she saw a man carrying a child around 9:15, and days later identified the man as Robert Murat carrying Madeleine.
There's even an idiom in the South, "I don't have a dog in this hunt" meaning, I don't have a personal stake in this argument or issue, and I can't justify just an opinion because I don't have a reliable advocate.