Historical Human Remains Detection (HHRD) K9 teams are trained to locate trace odor associated with old or historic human remains, often decades to centuries old, rather than recent forensic decomposition. Training typically begins with imprinting dogs on odor from archaeological human bone, grave dirt and associated materials, as well as training in old cemeteries, followed by progressive search exercises that build hunting drive, odor recognition, source identification, and a clear trained final response. Dogs learn to work in a wide range of environments common to cultural resource investigations—historic cemeteries, forested landscapes, rural properties, and disturbed soils—often searching large areas while ignoring modern human scent and other environmental distractions.
This work differs from traditional forensic search-and-rescue (SAR) human remains detection dogs, which are generally trained to locate recently deceased individuals and active decomposition odor in criminal or disaster contexts. HHRD dogs instead focus on aged skeletal odor and residual scent signatures associated with historic burials, and they operate within archaeological and heritage protection frameworks where surveys are non-invasive and findings inform cultural resource management rather than criminal investigation.