Presence of contagious yawning in sheep

Smell facilitates auditory contagious yawning in stranger rats

(2014) Alejandro Moyaho et al.   ANIMAL COGNITION

Individual Variation in Contagious Yawning Susceptibility Is Highly Stable and Largely Unexplained by Empathy or Other Known Factors

(2014) Alex J. Bartholomew et al.   PLoS One

Social Modulation of Contagious Yawning in Wolves

(2014) Teresa Romero et al.   PLoS One

Familiarity-connected or stress-based contagious yawning in domestic dogs (Canis familiaris)? Some additional data

(2013) Karine Silva et al.   ANIMAL COGNITION

Familiarity Bias and Physiological Responses in Contagious Yawning by Dogs Support Link to Empathy

(2013) Teresa Romero et al.   PLoS One

Chimpanzees Show a Developmental Increase in Susceptibility to Contagious Yawning: A Test of the Effect of Ontogeny and Emotional Closeness on Yawn Contagion

(2013) Elainie Alenkær Madsen et al.   PLoS One

Response facilitation in the four great apes: is there a role for empathy?

(2013) Federica Amici et al.   PRIMATES

In Bonobos Yawn Contagion Is Higher among Kin and Friends

(2012) Elisa Demuru et al.   PLoS One

Evidence for contagious behaviors in budgerigars (Melopsittacus undulatus): An observational study of yawning and stretching

(2011) Michael L. Miller et al.   BEHAVIOURAL PROCESSES

Born to yawn? Cortisol linked to yawning: A new hypothesis

(2011) Simon B.N. Thompson   MEDICAL HYPOTHESES

Ingroup-Outgroup Bias in Contagious Yawning by Chimpanzees Supports Link to Empathy

(2011) Matthew W. Campbell et al.   PLoS One

Yawn Contagion and Empathy in Homo sapiens

(2011) Ivan Norscia et al.   PLoS One

Neither infants nor toddlers catch yawns from their mothers

(2010) A. Millen et al.   Biology Letters

An investigation of auditory contagious yawning

(2009) Stephen R. Arnott et al.   COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE

Contagious yawning in gelada baboons as a possible expression of empathy

(2009) E. Palagi et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Computer animations stimulate contagious yawning in chimpanzees

(2009) M. W. Campbell et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Dogs catch human yawns

(2008) R. M Joly-Mascheroni et al.   Biology Letters