Case study: An evaluation of detection dog generalization to a large quantity of an unknown explosive in the field

Edgar O. Aviles-Rosa, Gordon McGuinness, Nathaniel J. Hall

Research output: Contribution to journalArticlepeer-review

Abstract

Two explosive detection dogs were deployed to search a suspicious bag, and failed to detect 13 kg of explosive within. The aim of this research was to further evaluate this incident. First, dog teams (N = 7) searched four bags in a similar scenario. One bag contained the same 13 kg of explosive, two bags were blanks, and the other contained the training sample that the agency routinely used for training. All dogs detected the training sample, but most (5/7) did not alert to the 13 kg sample. Subsequently, dogs received two trials in a line up with a 30 g subsample of the explosive to evaluate whether they could generalize to a smaller quantity. Most dogs (6/7) alerted to the subsample at least once. Finally, dogs were trained with the 30 g subsample and later tested with the 13 kg sample. Only three dogs spontaneously generalized to the large sample after training with the small subsample. Dogs’ alert rate to the 13 kg sample was improved with training in subsequent trials with the 13 kg sample. This result indicates that explosive detection dogs may not generalize to a target odor at a significantly higher quantity relative to the one used in training, highlighting the importance of conducting such training.

Original languageEnglish
Article number1341
JournalAnimals
Volume11
Issue number5
DOIs
StatePublished - May 2021

Keywords

  • Ammonium nitrate fuel oil
  • Canine olfac-tion
  • Concentration generalization
  • Detection dog
  • Explosive

Fingerprint

Dive into the research topics of 'Case study: An evaluation of detection dog generalization to a large quantity of an unknown explosive in the field'. Together they form a unique fingerprint.

Cite this