Comparing the ability of miniature pigs and family dogs to learn iconic and ‎non-iconic orientation cues ‎


SOCIETY FOR INTEGRATIVE AND COMPARATIVE BIOLOGY
2021 VIRTUAL ANNUAL MEETING (VAM)
January 3 – Febuary 28, 2021

Meeting Abstract


15-1  Sat Jan 2  Comparing the ability of miniature pigs and family dogs to learn iconic and ‎non-iconic orientation cues ‎ Dror, S*; Magyari, L; Fugazza, C; Miklósi, A; Andics, A; Department of Ethology, Eötvös Loránd University, Budapest; MTA-ELTE ‘Lendület’ Neuroethology of Communication Research Group, Hungarian ‎Academy of Sciences‎ shanymd@gmail.com

Gestures had a crucial role in the evolution of human ‎language, therefore ‎investigating gesture comprehension in nonhuman species is of ‎great interest. Family ‎dogs can spontaneously follow pointing gestures, possibly as a ‎result of selection for ‎cooperation skills during the domestication ‎process. Unlike dogs, pigs were ‎domesticated as meat stock. Previous work suggests ‎that pigs do not spontaneously ‎follow human gestures but can be trained to do so. This study ‎compared the ability of ‎similarly raised dogs (N=10) and miniature pigs (N=6), to react ‎to iconic (IC) and non-‎iconic (NI) cues. We hypothesized that the difference in the ‎domestication goals will ‎result in dogs outperforming pigs. In addition, as owners ‎often use IC gestures for ‎communicating with their pets, IC cues were expected to ‎result in higher ‎performance. Subjects were trained to approach food dispensers ‎positioned on their ‎left and right based on an experimenter given cue. In each specie, ‎half of the subjects ‎received cues given by the experimenter’s legs, and half received ‎hand gestures as ‎cues. Both species learned the IC and NI hand cues with higher ‎than chance ‎performance. However, both performed better with IC hand cues. Dogs ‎performed ‎better than pigs with hand given IC cues. Both species performed at ‎chance level ‎when receiving leg cues. we conclude that dogs ‎are more successful in reacting to ‎human gestures and suggest that ‎iconicity facilitates learning in dogs more than in ‎pigs. We attribute the low ‎performance for leg cues to an attentional bias, as all ‎subjects were used to receiving ‎food from the experimenter’s hands.‎

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