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Originally Posted by LadyShea
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The purpose of this project was to provide data on the success rate of dogs identifying people by scent when working in conditions similar to those used by the police in Holland and Germany. Over 700 scent samples were collected from people of both sexes and a wide age range and seven dogs, Canis familiaris, were trained to match human body scents. The test conditions were carefully controlled to eliminate any cue other than the body scents presented to the dog. Each dog sniffed a piece of cloth which had been in contact with an unspecified part of the body of a person and then indicated which of a selection of blank or body-scented cloths bore the same scent. The handler did not know the location of the target scent. The average score of the dogs working with body-scented cloths from six donors was 80% correct whereas a random choice of cloth would have been 17% correct. http://www.sciencedirect.com/science...03347284713807
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In a scent identification line-up, a trained dog matches the scent trace left by a perpetrator at the crime scene to the odour of a suspect in a line-up of different odours. The procedures are strictly defined and the results are routinely used by the police and as evidence in court in a number of European countries. This paper describes the effect of ageing of the odour trace collected at the crime scene on the performance of the dogs in recognising the perpetrator in a line-up.
Elsevier
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Dogs were trained to detect the bed bug (as few as one adult male or female) and viable bed bug eggs (five, collected 5–6 d after feeding) by using a modified food and verbal reward system.
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We tested whether dogs have a cross-modal representation of human individuals. We presented domestic dogs with a photo of either the owner's or a stranger's face on the LCD monitor after playing back a voice of one of those persons. A voice and a face matched in half of the trials (Congruent condition) and mismatched in the other half (Incongruent condition). If our subjects activate visual images of the voice, their expectation would be contradicted in Incongruent condition. It would result in the subjects’ longer looking times in Incongruent condition than in Congruent condition. Our subject dogs looked longer at the visual stimulus in Incongruent condition than in Congruent condition. This suggests that dogs actively generate their internal representation of the owner's face when they hear the owner calling them. This is the first demonstration that nonhuman animals do not merely associate auditory and visual stimuli but also actively generate a visual image from auditory information. Furthermore, our subject also looked at the visual stimulus longer in Incongruent condition in which the owner's face followed an unfamiliar person's voice than in Congruent condition in which the owner's face followed the owner's voice. Dogs recall their owner's face upon hearing the owner's voice - Springer
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To examine the role of these structures in auditory memory, we performed rhinal, hippocampal, and combined lesions in groups of dogs trained in auditory delayed matching-to-sample with trial-unique sounds. The sample sound was presented through a central speaker and, after a delay, the sample sound and a different sound were played alternately through speakers placed on either side of the animal; the animal was rewarded for responding to the side emitting the sample sound. http://www.sciencedirect.com/science...06452201001403
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Ooh look. A dog learning symbolic language! There are some videos of this
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A female mongrel dog was submitted to a training schedule in which, after basic command training and after acquiring the verbal labels of rewarding objects or activities, she learned to ask for such objects or activities by selecting lexigrams and pressing keys on a keyboard. Systematic records taken during spontaneous interaction with one of the experimenters showed that lexigrams were used in an appropriate, intentional way, in accordance with the immediate motivational context. The dog only utilized the keyboard in the experimenter’s presence and gazed to him more frequently after key pressing than before, an indication that lexigram use did have communicative content.A dog at the keyboard: using arbitrary signs to co... [Anim Cogn. 2008] - PubMed - NCBI
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I do not see people doing tests to determine if dogs can recognize their owners from their smell or the sound of their voices because they already know that dogs recognize from these sources, therefore there's no need for a test to prove it.