Cadaver dogs are unreliable - Eugene Zapata

[barrier]

Your quote mentions urine... Not urine from a cadaver..
What's the link

Seeing as its the McCann board,any evidence some one pissed in the corner of 5a.

[Robittybob1]

So it's established urine contains cadaverine so is it possible a dog would alert to stale urine... Bianca's seat
From what I can see the digs are not tested for other substances... When discussing false positives grime tals of 200 case searches.  He doesn't mention testing... The reason is clear imo

IMO Its not cadaverine that a cadaver dog alerts to, otherwise they would bark at all dead animals and patches of urine which in the end are virtually everywhere with kids and pets.
It has to be something species specific.

[Mr Gray]

IMO Its not cadaverine that a cadaver dog alerts to, otherwise they would bark at all dead animals and patches of urine which in the end are virtually everywhere with kids and pets.
It has to be something species specific.

Was Eddie ever tested for dead animals

[Robittybob1]

Was Eddie ever tested for dead animals

Do you know?  All I know is it was claimed he has never alerted to roadkill etc.

[Mr Gray]

Do you know?  All I know is it was claimed he has never alerted to roadkill etc.

Was he ever tested

[Robittybob1]

Was he ever tested

Do you know?

[Mr Gray]

Do you know?

Does anyone know

[Billy Whizz Fan Club]

Does anyone know

https://www.researchgate.net/publication/51385143_Cadaver_dogs_-_A_study_on_detection_of_contaminated_carpet_squares

Cadaver dogs are known as valuable forensic tools in crime scene investigations. Scientific research attempting to verify their value is largely lacking, specifically for scents associated with the early postmortem interval. The aim of our investigation was the comparative evaluation of the reliability, accuracy, and specificity of three cadaver dogs belonging to the Hamburg State Police in the detection of scents during the early postmortem interval. Carpet squares were used as an odor transporting media after they had been contaminated with the scent of two recently deceased bodies (PMI<3h). The contamination occurred for 2 min as well as 10 min without any direct contact between the carpet and the corpse. Comparative searches by the dogs were performed over a time period of 65 days (10 min contamination) and 35 days (2 min contamination). The results of this study indicate that the well-trained cadaver dog is an outstanding tool for crime scene investigation displaying excellent sensitivity (75-100), specificity (91-100), and having a positive predictive value (90-100), negative predictive value (90-100) as well as accuracy (92-100).

[Mr Gray]

https://www.researchgate.net/publication/51385143_Cadaver_dogs_-_A_study_on_detection_of_contaminated_carpet_squares

Cadaver dogs are known as valuable forensic tools in crime scene investigations. Scientific research attempting to verify their value is largely lacking, specifically for scents associated with the early postmortem interval. The aim of our investigation was the comparative evaluation of the reliability, accuracy, and specificity of three cadaver dogs belonging to the Hamburg State Police in the detection of scents during the early postmortem interval. Carpet squares were used as an odor transporting media after they had been contaminated with the scent of two recently deceased bodies (PMI<3h). The contamination occurred for 2 min as well as 10 min without any direct contact timen the carpet and the corpse. Comparative searches by the dogs were performed over a time period of 65 days (10 min contamination) and 35 days (2 min contamination). The results of this study indicate that the well-trained cadaver dog is an outstanding tool for crime scene investigation displaying excellent sensitivity (75-100), specificity (91-100), and having a positive predictive value (90-100), negative predictive value (90-100) as well as accuracy (92-100).

I've seen this a million times... All it tells us is that the dog will find cadaver odour... It doesn't prove every alert is cadaver odour

[pathfinder73]

A proven cadaver dog alert indicates to the police that the missing person will never again be seen alive after other possibilities are investigated and discarded. They are now looking for a body! You can always provide examples of proven cadaver dogs getting alerts wrong and the missing person turning up alive and well?

The Zapata case is a good example. The husband lied repeatedly like Adrian Prout but in the end they both confessed proving the cadaver dog alerts.

[Mr Gray]

A proven cadaver dog alert indicates to the police that the missing person will never again be seen alive after other possibilities are investigated and discarded. They are now looking for a body! You can always provide examples of proven cadaver dogs getting alerts wrong and the missing person turning up alive and well?

The Zapata case is a good example. The husband lied repeatedly like Adrian Prout but in the end they both confessed proving the cadaver dog alerts.

So will none of the owners of those baby teeth in Jersey everbbe seen alive aggain

[pathfinder73]

That was investigating a child abuse home. Cadaver dogs are brought into a missing person case when murder is suspected.

[Billy Whizz Fan Club]

So will none of the owners of those baby teeth in Jersey everbbe seen alive aggain

How can you use that place as an example? Bad bad place. Bad bad example when trying to discredit a cadaver dog, IMHO.

[pathfinder73]

Body found in the hunt for missing British student Hannah Graham: Discovery made in abandoned house near prime suspect's mother's home in Virginia

https://www.dailymail.co.uk/news/article-2798649/search-missing-uva-student-hannah-graham-uncovers-human-remains-abandoned-property-south-disappeared.html

[Mr Gray]

Body found in the hunt for missing British student Hannah Graham: Discovery made in abandoned house near prime suspect's mother's home in Virginia

https://www.dailymail.co.uk/news/article-2798649/search-missing-uva-student-hannah-graham-uncovers-human-remains-abandoned-property-south-disappeared.html

Where dies it say the digs found her body