作者: Ian Dunbar , Marie Carmichael
DOI: 10.1016/S0163-1047(81)91546-6
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摘要: Male dogs were given two simultaneous choice olfactory discrimination tests: the first was with their own urine vs from another male that lived in same colony; and second a strange they had never before encountered. The animals spent nearly twice as much time investigating other males colony over four times longer stranger did urine. Times decreased successive exposure to samples. In addition, urinated more often on colony-male strange-male