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The ability of the domestic dog to recognise its kin, and to retain this information once acquired, was studied in this paper. Dogs were examined for their ability to recognise their siblings, offspring to recognise their mother, and mothers to recognise their offspring, using a series of two choice tests. The results revealed that, at 4-5.5 weeks of age, pups can recognise their siblings and their...
This paper describes neurophysiological and behavioural experiments which investigate the ability of sheep to recognise different individuals using visual and olfactory cues. Behavioural experiments using Y-mazes with back-projected images of faces have shown that sheep can distinguish between the faces of sheep and humans when the faces are presented in a frontal view although they have more difficulty...
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