Is there a cite for cadaver dogs alerting in the Mathews case,I've only found specialist dogs failing to find a trace.
March 2008 :Police searching for missing nine-year-old schoolgirl Shannon Matthews said today that more than 500 homes lining her route to school have been searched using specialist sniffer dogs.
https://www.theguardian.com/uk/2008/mar/04/ukcrime2
Update DEC 2008.
March 4: One-tenth of Yorkshire police are now deployed in the hunt for Shannon - the biggest such operation since the search for the Yorkshire Ripper. Sniffer dogs trained to find human remains search more than 500 houses.
https://www.theguardian.com/uk/2008/mar/14/2
Victim recovery dogs from four different police forces were used during searches for kidnapped schoolgirl Shannon Matthews in Dewsbury in West Yorkshire in 2008.
The dogs found evidence of dead bodies, but officers later discovered the corpses were nothing to do with her disappearance.
"The properties searched contained a high level of second-hand furniture bought from dwellings where someone had died," according to the NPIA report.
"This resulted in numerous indications that required further investigation to confirm whether they were connected to the investigation, or to previous owners of the furniture."
https://news.sky.com/story/sniffer-dogs-can-hinder-police-work-10488976