Animal Cognition

, Volume 17, Issue 1, pp 95–104 | Cite as

Contagious yawning, social cognition, and arousal: an investigation of the processes underlying shelter dogs’ responses to human yawns

  • Alicia Phillips Buttner
  • Rosemary Strasser
Original Paper


Studies of contagious yawning have reported inconsistent findings regarding whether dogs exhibit this behavior and whether it is mediated by social-cognitive processes or the result of physiological arousal. We investigated why some dogs yawn in response to human yawns; particularly, whether these dogs are exceptional in their ability to understand human social cues or whether they were more physiologically aroused. Sixty shelter dogs were exposed to yawning and nonyawning control stimuli demonstrated by an unfamiliar human. We took salivary cortisol samples before and after testing to determine the role of arousal in yawn contagion. Dogs were tested on the object-choice task to assess their sensitivity for interpreting human social cues. We found that 12 dogs yawned only in response to human yawns (i.e., appeared to exhibit yawn contagion), though contagious yawning at the population level was not observed. Dogs that exhibited yawn contagion did not perform better on the object-choice task than other dogs, but their cortisol levels remained elevated after exposure to human yawning, whereas other dogs had reduced cortisol levels following yawning stimuli relative to their baseline levels. We interpret these findings as showing that human yawning, when presented in a stressful context, can further influence arousal in dogs, which then causes some to yawn. Although the precise social-cognitive mechanisms that underlie contagious yawning in dogs are still unclear, yawning between humans and dogs may involve some communicative function that is modulated by context and arousal.


Canis familiaris Contagious yawning Cortisol Dog Interspecies interactions Physiological arousal Social cognition 



We thank Jeffrey French and Daniel Hawkins for their input on this project. We are grateful to Jefferey French for the use of the UNOmaha Endocrine BioServices Assay Laboratory and also to Andrew Birnie, Kaitlyn Filippini, and Jon Cavanaugh for their assistance in the laboratory. We also thank Denise Gurss and the Nebraska Humane Society for the use of their facility and animals, and Asia Cahill, Sydney Waldo, and Briana Licht for their help with data collection. This research was supported by the University of Nebraska at Omaha, Office of Sponsored Programs and Research, and the Rhoden Biological Fellowship.


  1. Anderson JR, Meno P (2003) Psychological influences of yawning in children. Curr Psychol Lett 11(2). (
  2. Anías-Calderón J, Verdugo-Díaz L, Drucker-Colín R (2004) Adrenalectomy and dexamethasone replacement on yawning behavior. Beh Brain Res 154:225–259. doi: 10.1016/j.bbr.2003.08.020 CrossRefGoogle Scholar
  3. Arnott SR, Singhal A, Goodale MA (2009) An investigation of auditory contagious yawning. Cogn Affect Behav Neurosci 9:335–342. doi: 10.3758/CABN.9.3.335 PubMedCrossRefGoogle Scholar
  4. Baenninger R (1997) On yawning and its functions. Psychon Bull Rev 4:198–207PubMedCrossRefGoogle Scholar
  5. Beerda B, Schilder MH, van Hooff JM, de Vries HW, Mol JA (1998) Behavioral, saliva cortisol and heart rate responses to different types of stimuli in dogs. Appl Anim Behav Sci 58:365–381. doi: 10.1016/S0168-1591(97)00145-7 CrossRefGoogle Scholar
  6. Campbell MW, de Waal FBM (2010) Methodological problems in the study of contagious yawning. In: Walusinski O (ed) The mystery of yawning in physiology and disease: frontiers of neurology and neuroscience. Karger, Basel, pp 120–127CrossRefGoogle Scholar
  7. Campbell MW, de Waal FBM (2011) Ingroup-outgroup bias in contagious yawning by chimpanzees supports link to empathy. PLoS One 6:e18283. doi: 10.1371/journal.pone.0018283 PubMedCentralPubMedCrossRefGoogle Scholar
  8. Demuru E, Palagi E (2012) In bonobos yawn contagion is higher among kin and friends. PLoS One 7:e49613. doi: 10.1371/journal.pone.0049613 PubMedCentralPubMedCrossRefGoogle Scholar
  9. Deputte BL (1994) Ethological study of yawning in primates: I. Quantitative-analysis and study of causation in two species of old world monkeys (Cercocebus albigena and Macaca fascicularis). Ethology 98:221–245CrossRefGoogle Scholar
  10. Dreschel NA, Granger DG (2005) Physiological and behavioral reactivity to stress in thunderstorm-phobic dogs and their caregivers. Appl Anim Behav Sci 95:153–168. doi: 10.1016/j.applanim.2005.04.009 CrossRefGoogle Scholar
  11. Emery NJ, Clayton NS (2009) Comparative social cognition. Ann Rev Psychol 60:87–113. doi: 10.1146/annurev.psych.60.110707.163526 CrossRefGoogle Scholar
  12. Giganti F, Esposito Ziello M (2009) Contagious and spontaneous yawning in autistic and typically developing children. Curr Psychol Lett 25(1):1–11. Retrieved from: Google Scholar
  13. Guggisberg AG, Mathis J, Schnider A, Hess CW (2010) Why do we yawn? Neurosci Biobehav Rev 34:1267–1276. doi: 10.1016/j.neubiorev.2010.03.008 PubMedCrossRefGoogle Scholar
  14. Hare B, Brown M, Williamson C, Tomasello M (2002) The domestication of social cognition in dogs. Science 298:1634–1636. doi: 10.1126/science.1072702 PubMedCrossRefGoogle Scholar
  15. Hare B, Rosati A, Kaminski J, Bräuer J, Call J, Tomasello M (2010) The domestication hypothesis for dogs’ skills with human communication: a response to Udell et al. (2008) and Wynne et al. (2008). Anim Behav 79:e1–e6. doi: 10.1016/j.anbehav.2009.06.031 CrossRefGoogle Scholar
  16. Harr AL, Gilbert VR, Phillips KA (2009) Do dogs (Canis familiaris) show contagious yawning? Anim Cogn 12:833–837. doi: 10.1007/s10071-009-0233-0 PubMedCrossRefGoogle Scholar
  17. Hennessy MB, Davis HN, Williams MT, Mellott C, Douglas CW (1997) Plasma cortisol levels of dogs at a county animal shelter. Phys Behav 6:485–490. doi: 10.1016/S0031-9384(97)80328-9 CrossRefGoogle Scholar
  18. Hennessy MB, Williams MT, Miller DD, Douglas CW, Voith VL (1998) Influence of male and female petters on plasma cortisol and behavior: can human interaction reduce the stress of dogs in a public animal shelter? Appl Anim Behav Sci 61:63–77. doi: 10.1016/S0168-1591(98)00179-8 CrossRefGoogle Scholar
  19. Joly-Mascheroni RM, Senju A, Shepherd AJ (2008) Dogs catch human yawns. Biol Lett 4:446–448. doi: 10.1098/rsbl.2008.0333 PubMedCentralPubMedCrossRefGoogle Scholar
  20. Kobelt A, Hemsworth PH, Barnett JL, Butler KL (2003) Sources of sampling variation in saliva cortisol in dogs. Res Vet Sci 75:57–161CrossRefGoogle Scholar
  21. Madsen EA, Persson T (2012) Contagious yawning in domestic dog puppies (Canis lupis familiaris): the effect of ontogeny and emotional closeness on low-level imitation in dogs. Anim Cogn 16:233–240. doi: 10.1007/s10071-012-0568-9 PubMedCrossRefGoogle Scholar
  22. Maestripieri D, Schino G, Aureli F, Troisi A (1992) A modest proposal: displacement activities as an indicator of emotions in primates. Anim Behav 44:967–979. doi: 10.1016/S0003-3472(05)80592-5 CrossRefGoogle Scholar
  23. Massen JJ, Vermunt DA, Sterck EH (2012) Male yawning is more contagious than female yawning among chimpanzees (Pan troglodytes). PLoS One 7:e40697PubMedCentralPubMedCrossRefGoogle Scholar
  24. Miklósi A, Topál J (2011) On the hunt for the gene of perspective taking: pitfalls in methodology. Learn Behav 39:310–313. doi: 10.3758/s13420-011-0038-2 PubMedCrossRefGoogle Scholar
  25. Millen A, Anderson JR (2011) Neither infants nor toddlers catch yawns from their mothers. Biol Lett 7:440–442. doi: 10.1098/rsbl.2010.0966 PubMedCentralPubMedCrossRefGoogle Scholar
  26. Norscia I, Palagi E (2011) Yawn contagion and empathy in Homo sapiens. PLoS One 6:e28472. doi: 10.1371/journal.pone.0028472 PubMedCentralPubMedCrossRefGoogle Scholar
  27. O’Hara SJ, Reeve AV (2011) A test of the yawning contagion and emotional connectedness hypothesis in dogs, Canis familiaris. Anim Behav 81:335–340. doi: 10.1016/j.anbehav.2010.11.005 CrossRefGoogle Scholar
  28. Palagi E, Leone A, Mancini G, Ferrari PF (2009) Contagious yawning in gelada baboons as a possible expression of empathy. Proc Natl Acad Sci USA 106:19262–19267. doi: 10.1073_pnas.0910891106 PubMedCrossRefGoogle Scholar
  29. Paukner A, Anderson JR (2006) Video-induced yawning in stumptail macaques (Macaca arctoides). Biol Lett 2:36–38. doi: 10.1098/rsbl.2005.0411 PubMedCentralPubMedCrossRefGoogle Scholar
  30. Platek SM, Critton SR, Myers TE, Gallup GG Jr (2003) Contagious yawning: the role of self-awareness and mental state attribution. Cogn Brain Res 17:223–227. doi: 10.1016/S0926-6410(03)00109-5 CrossRefGoogle Scholar
  31. Provine RR (1986) Yawning as a stereotyped action pattern and releasing stimulus. Ethology 72:448–455Google Scholar
  32. Reid PJ (2009) Adapting to the human world: dogs’ responsiveness to our social cues. Behav Process 80:325–333CrossRefGoogle Scholar
  33. Rooney NJ, Gaines SA, Bradshaw JS (2007) Behavioral and glucocorticoid responses of dogs (Canis familiaris) to kennelling: investigating mitigation of stress by prior habituation. Physiol Behav 92:847–854. doi: 10.1016/j.physbeh.2007.06.011 PubMedCrossRefGoogle Scholar
  34. Senju A, Maeda M, Kikuchi Y, Hasegawa T, Tojo Y, Osanai H (2007) Absence of contagious yawning in children with autism spectrum disorder. Biol Lett 3:706–708. doi: 10.1098/rsbl.2007.0337 PubMedCentralPubMedCrossRefGoogle Scholar
  35. Senju A, Kikuchi Y, Akechi H, Hasegawa T, Tojo Y, Osanai H (2009) Brief report: does eye contact induce contagious yawning in children with autism spectrum disorder? J Autism Devel Disord 39(11):1598–1602. doi: 10.1007/s10803-009-0785-5 CrossRefGoogle Scholar
  36. Silva K, Bessa J, de Sousa L (2012) Auditory contagious yawning in domestic dogs (Canis familiaris): first evidence for social modulation. Anim Cogn 15:721–724. doi: 10.1007/s10071-012-0473-2 PubMedCrossRefGoogle Scholar
  37. Tuber DS, Hennessy MB, Sanders S, Miller JA (1996) Behavioral and glucocorticoid responses of adult domestic dogs (Canis familiaris) to companionship and social separation. J Comp Psychol 110:103–108. doi: 10.1037/0735-7036.110.1.103 PubMedCrossRefGoogle Scholar
  38. Udell MAR, Dorey NR, Wynne CDL (2010) What did domestication do to dogs? A new account of dogs’ sensitivity to human actions. Biol Rev 85:327–345. doi: 10.1111/j.1469-185X.2009.00104.x PubMedCrossRefGoogle Scholar
  39. Vincent LC, Michell AR (1992) Comparison of cortisol concentration in saliva plasma of dogs. Res Vet Sci 53:342–345PubMedCrossRefGoogle Scholar
  40. Yoon J, Tennie C (2010) Contagious yawning: a reflection of empathy, mimicry, or contagion? Anim Behav 79:e1–e3. doi: 10.1016/j.anbehav.2010.02.011 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of PsychologyUniversity of Nebraska at OmahaOmahaUSA

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