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Dogs yawn more often in response to owners' yawns than strangers

Date:
August 7, 2013
Source:
Public Library of Science
Summary:
Dogs yawn contagiously when they see a person yawning, and respond more frequently to their owner's yawns than to a stranger's, according to new research.
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Basset hound yawning. Dogs yawn contagiously when they see a person yawning, and respond more frequently to their owner's yawns than to a stranger's.
Credit: © cynoclub / Fotolia

Dogs yawn contagiously when they see a person yawning, and respond more frequently to their owner's yawns than to a stranger's, according to research published August 7 in the open access journal PLOS ONE by Teresa Romero and colleagues from the University of Tokyo.

Pet dogs in the study watched their owner or a stranger yawn, or mimic a yawning mouth movement, but yawned significantly more in response to their owners' actions than to the strangers' yawns. The dogs also responded less frequently to the fake movements, suggesting they have the ability to yawn contagiously. Previous research has shown that dogs yawn in response to human yawns, but it was unclear whether this was a mild stress response or an empathetic response. The results of this study suggest the latter, as dogs responded more to their owners' genuine yawns than those of a stranger. The researchers observed no significant differences in the dogs' heartbeat during the experiments, making it unlikely that their yawns were a distress response.

Explaining the significance of the results, Romero says, "Our study suggests that contagious yawning in dogs is emotionally connected in a way similar to humans. Although our study cannot determine the exact underlying mechanism operative in dogs, the subjects' physiological measures taken during the study allowed us to counter the alternative hypothesis of yawning as a distress response.


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The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Teresa Romero, Akitsugu Konno, Toshikazu Hasegawa. Familiarity Bias and Physiological Responses in Contagious Yawning by Dogs Support Link to Empathy. PLoS ONE, 2013; 8 (8): e71365 DOI: 10.1371/journal.pone.0071365

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Public Library of Science. "Dogs yawn more often in response to owners' yawns than strangers." ScienceDaily. ScienceDaily, 7 August 2013. <www.sciencedaily.com/releases/2013/08/130807204847.htm>.
Public Library of Science. (2013, August 7). Dogs yawn more often in response to owners' yawns than strangers. ScienceDaily. Retrieved April 26, 2015 from www.sciencedaily.com/releases/2013/08/130807204847.htm
Public Library of Science. "Dogs yawn more often in response to owners' yawns than strangers." ScienceDaily. www.sciencedaily.com/releases/2013/08/130807204847.htm (accessed April 26, 2015).

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