Familiarity bias and physiological responses in contagious yawning by dogs support link to empathy
Romero, Konno and Hasegawa, PLoS ONE, 2013. Twenty-five dogs watched familiar (owner) and unfamiliar human models act out yawns or control mouth movements; more yawning in the yawn condition and with the familiar model; heart rate did not differ between conditions.
Romero, Konno and Hasegawa, PLoS ONE, 2013. Twenty-five dogs watched familiar (owner) and unfamiliar human models act out yawns or control mouth movements; more yawning in the yawn condition and with the familiar model; heart rate did not differ between conditions.
Written from the abstract.
What our sources record
Recorded when this source was checked, figures included, with page references and quotation marks removed.
PLoS ONE. doi:10.1371/journal.pone.0071365 https://doi.org/10.1371/journal.pone.0071365