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Percentage of time spent by the dog with its head within handler vs. sample areas. Percentage of time spent by the dog with its head within the handler vs. the samples area in each trial. Differences were statistically significant in all trials, except for trials 1, 11, 16, 20, 23, 26, 31, 36, and 37, in which the difference between time spent with handler vs. time spent with samples was not significant.
