Journal for Veterinary Medicine, Biotechnology and Biosafety

Volume 12, Issue 2, May 2026, Pages 9–16

ISSN 2411-3174 (print version) ISSN 2411-0388 (online version)

DOG BODY LANGUAGE (LITERATURE REVIEW)

Dankevych N. I. 1, Ertürk G. 2

1 Odesa State Agrarian University, Odesa, Ukraine, e-mail: dankevych82@gmail.com

2 Active Dog Training & Psychology Center, Ankara, Turkey

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Citation for print version: Dankevych, N. I. and Ertürk, G. (2026) ‘Dog body language (literature review)’, Journal for Veterinary Medicine, Biotechnology and Biosafety, 12(2), pp. 9–16.

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Citation for online version: Dankevych, N. I. and Ertürk, G. (2026) ‘Dog body language (literature review)’, Journal for Veterinary Medicine, Biotechnology and Biosafety, 12(2), pp. 9–16. DOI: 10.36016/JVMBBS-2026-12-2-2.

Summary. The article is devoted to a comprehensive analysis of contemporary scientific research exploring canine body language as a complex system of nonverbal communication. Based on a review of domestic and international publications indexed in PubMed, Scopus, Web of Science, Google Scholar, and other databases, the study summarizes findings on the development of dogs’ communicative abilities in the course of domestication and coevolution with humans. Special attention is given to the evolutionary foundations of interspecies interaction, as well as to the role of morphological and breed differences and the influence of sex and age on behavioral signals. The paper also examines modern objective methods for analyzing canine facial expressions and postures, including the DogFACS (Dog Facial Action Coding System) system and machine learning technologies CNN (Convolutional Neural Network), DeepLabCut (Deep Learning-based Markerless Pose Estimation), used for the automatic recognition of body postures and emotional states in dogs. The study systematizes the main components of canine body language, including facial expressions, ear position, eye expression, mouth posture, body stance, and tail movements, emphasizing their integrated interpretation within various social contexts. The importance of correctly interpreting canine signals for conflict prevention, safety enhancement, and strengthening trust-based relationships between humans and dogs is highlighted. It is concluded that understanding canine body language is an acquired skill based on observation, learning, and interspecies empathy, and that it has significant practical value in veterinary medicine, as well as for dog owners, trainers, and animal behavior specialists

Keywords: nonverbal communication, animal behavior, human–dog interaction

References:

Ballantyne, K. C. (2018) ‘Separation, confinement, or noises: what is scaring that dog?’, Veterinary Clinics of North America: Small Animal Practice, 48(3), pp. 367–386. doi: 10.1016/j.cvsm.2017.12.005.

Bloom, T. and Friedman, H. (2013) ‘Classifying dogs’ (Canis familiaris) facial expressions from photographs’, Behavioural Processes, 96, pp. 1–10. doi: 10.1016/j.beproc.2013.02.010.

Boneh-Shitrit, T., Feighelstein, M., Bremhorst, A., Amir, S., Distelfeld, T., Dassa, Y., Yaroshetsky, S., Riemer, S., Shimshoni, I., Mills, D. S. and Zamansky, A. (2022) ‘Explainable automated recognition of emotional states from canine facial expressions: the case of positive anticipation and frustration’, Scientific Reports, 12(1), p. 22611. doi: 10.1038/s41598-022-27079-w.

Borgi, M. and Cirulli, F. (2016) ‘Pet face: Mechanisms underlying human-animal relationships’, Frontiers in Psychology, 7, p. 298. doi: 10.3389/fpsyg.2016.00298.

Bremhorst, A., Mills, D., Stolzlechner, L., Würbel, H. and Riemer, S. (2021) ‘‘Puppy dog eyes’ are associated with eye movements, not communication’, Frontiers in Psychology, 12, p. 568935. doi: 10.3389/fpsyg.2021.568935.

Bremhorst, A., Sutter, N. A., Würbel, H., Mills, D. S. and Riemer, S. (2019) ‘Differences in facial expressions during positive anticipation and frustration in dogs awaiting a reward’, Scientific Reports, 9(1), p. 19312. doi: 10.1038/s41598-019-55714-6.

Brugarolas, R., Loftin, R., Yang, P., Roberts, D. L., Sherman, B. and Bozkurt, A. (2013) ‘Behavior recognition based on machine learning algorithms for a wireless canine machine interface’, 2013 IEEE International Conference on Body Sensor Networks (BSN), Cambridge, MA, USA, 6–9 May. Cambridge, MA, USA: Institute of Electrical and Electronics Engineers. doi: 10.1109/bsn.2013.6575505.

Burrows, A. M., Kaminski, J., Waller, B. M., Omstead, K. M., Rogers-Vizena, C. and Mendelson, B. (2021) ‘Dog faces exhibit anatomical differences in comparison to other domestic animals’, The Anatomical Record, 304(1), pp. 231–241. doi: 10.1002/ar.24507.

Carson, C. A. (2007) ‘Nonverbal communication in veterinary practice’, Veterinary Clinics of North America: Small Animal Practice, 37(1), pp. 49–63. doi: 10.1016/j.cvsm.2006.10.001

Correia-Caeiro, C., Guo, K. and Mills, D. S. (2023) ‘Visual perception of emotion cues in dogs: A critical review of methodologies’, Animal Cognition, 26, pp. 727–754. doi: 10.1007/s10071-023-01762-5.

Crosby, J. and Rider, C. (2019) Law Enforcement Dog Encounters Training (LEDET): A Toolkit for Law Enforcement—Decoding Canine Body Language Quick Reference Guide. Washington, DC: Office of Community Oriented Policing Services. Available at: https://sheriffs.org/sites/default/files/cops-w0882.pdf.

Darwin, C. R. (1871) The Descent of Man, and Selection in Relation to Sex. London: John Murray. doi: 10.1037/12293-000.

Darwin, C. R. (1872) The Expression of the Emotions in Man and Animals. London: John Murray. doi: 10.1037/10001-000.

Derra, S. (2025) ‘Think you understand your dog? Don’t be so sure: ASU research shows humans have a long way to go in understanding a dog’s emotions’, ASU News, 11 March. Available at: https://news.asu.edu/20250311-science-and-technology-think-you-understand-your-dog-dont-be-so-sure.

Duffy, D. L., Hsu, Y. and Serpell, J. A. (2008) ‘Breed differences in canine aggression’, Applied Animal Behaviour Science, 114(3–4), pp. 441–460. doi: 10.1016/j.applanim.2008.04.006.

Eken Asp, H., Fikse, W. F., Nilsson, K. and Strandberg, E. (2015) ‘Breed differences in everyday behaviour of dogs’, Applied Animal Behaviour Science, 169, pp. 69–77. doi: 10.1016/j.applanim.2015.04.010. 

Elgier, A. M., Jakovcevic, A., Barrera, G., Mustaca, A. E. and Bentosela, M. (2009) ‘Communication between domestic dogs (Canis familiaris) and humans: Dogs are good learners’, Behavioural Processes, 81(3), pp. 402–408. doi: 10.1016/j.beproc.2009.03.017.

Ertürk, G. K. (2006) Köpeğiniz konuşuyor. Ankara: Kuki Obuz Yayınevi. [in Turkish].

Firnkes, A., Bartels, A., Bidoli, E. M. and Erhard, M. (2017) ‘Appeasement signals used by dogs during dog–human communication’, Journal of Veterinary Behavior, 19, pp. 35–44. doi: 10.1016/j.jveb.2016.12.012.

Gábor, A., Lehoczki, F., Bensaali-Nemes, F., Faragó, T., Surányi, K. and Andics, A. (2026) ‘Cross-species acoustic codes for yes and no in human nonverbal vocalizations’, Cognition, 266, p. 106284. doi: 10.1016/j.cognition.2025.106284.

Gähwiler, S., Bremhorst, A., Tóth, K. and Riemer, S. (2020) ‘Fear expressions of dogs during New Year fireworks: A video analysis’, Scientific Reports, 10(1), p. 16035. doi: 10.1038/s41598-020-72841-7.

Górski, K., Kondracki, S. and Kępka-Borkowska, K. (2026) ‘The complexity of communication in mammals: From social and emotional mechanisms to human influence and multimodal applications’, Animals, 16(2), p. 265. doi: 10.3390/ani16020265.

Grewal, J. S., Gloe, T., Hegedus, J., Bitterman, K., Billings, B. K., Chengetanai, S., Bentil, S., Wang, V. X., Ng, J. C., Tang, C. Y., Geletta, S., Wicinski, B., Bertelson, M., Tendler, B. C., Mars, R. B., Aguirre, G. K., Rusbridge, C., Hof, P. R., Sherwood, C. C., Manger, P. R. and Spocter, M. A. (2020) ‘Brain gyrification in wild and domestic canids: Has domestication changed the gyrification index in domestic dogs?’, Journal of Comparative Neurology, 528(18), pp. 3209–3228. doi: 10.1002/cne.24972.

Hasegawa, M., Ohtani, N. and Ohta, M. (2014) ‘Dogs’ body language relevant to learning achievement’, Animals, 4(1), pp. 45–58. doi: 10.3390/ani4010045.

Kaminski, J. and Marshall-Pescini, S. (eds.) (2014) The Social Dog: Behavior and Cognition. London: Academic Press. doi: 10.1016/C2012-0-06593-3.

Kaminski, J., Waller, B. M., Diogo, R., Hartstone-Rose, A. and Burrows, A. M. (2019) ‘Evolution of facial muscle anatomy in dogs’, Proceedings of the National Academy of Sciences, 116(29), pp. 14677–14681. doi: 10.1073/pnas.1820653116.

Karl, S., Boch, M., Zamansky, A., van der Linden, D., Wagner, I. C., Völter, C. J., Lamm, C. and Huber, L. (2020) ‘Exploring the dog–human relationship by combining fMRI, eye-tracking and behavioural measures’, Scientific Reports, 10(1), p. 22273. doi: 10.1038/s41598-020-79247-5.

Kubinyi, E., Virányi, Z. and Miklósi, Á. (2007) ‘Comparative social cognition: From wolf and dog to humans’, Comparative Cognition & Behavior Reviews, 2, pp. 26–46. doi: 10.3819/ccbr.2008.20002.

Leonetti, S., Cimarelli, G., Hersh, T. A. and Ravignani, A. (2024) ‘Why do dogs wag their tails?’, Biology Letters, 20(1), p. 20230407. doi: 10.1098/rsbl.2023.0407.

Machado, M. and da Silva, I. J. O. (2019) ‘Body expressions of emotions: does animals have it?’, Journal of Animal Behaviour and Biometeorology, 8(1), pp. 1–10. doi: 10.31893/jabb.20001.

Mandal, F. B. (2014) ‘Nonverbal communication in humans’, Journal of Human Behavior in the Social Environment, 24(4), pp. 417–421. doi: 10.1080/10911359.2013.831288.

Mariti, C., Gazzano, A., Moore, J. L., Baragli, P., Chelli, L. and Sighieri, C. (2012) ‘Perception of dogs’ stress by their owners’, Journal of Veterinary Behavior, 7(4), pp. 213–219. doi: 10.1016/j.jveb.2011.09.004.

Marshall-Pescini, S. and Kaminski, J. (2014) ‘Chapter 1 — The social dog: History and evolution’, in Kaminski, J. and Marshall-Pescini, S. (eds.) The Social Dog: Behavior and Cognition. London: Academic Press, pp. 3–33. doi: 10.1016/b978-0-12-407818-5.00001-2.

Martvel, G., Eretová, P., Přibylová, L., Chaloupková, H., Pongrácz, P., Shimshoni, I., Chen Cittone, N., Michaeli, Y., Grinstein, D. and Zamansky, A. (2025) ‘Continuous automated analysis of facial dynamics of brachycephalic and normocephalic dogs in different contexts’, BMC Veterinary Research, 21(1), p. 372. doi: 10.1186/s12917-025-04839-0.

McGreevy, P. D., Georgevsky, D., Carrasco, J., Valenzuela, M., Duffy, D. L. and Serpell,  J. A. (2013) ‘Dog behavior co-varies with height, bodyweight and skull shape’, PLoS One, 8(12), p. e80529. doi: 10.1371/journal.pone.0080529.

McPeake, K. J., Collins, L. M., Zulch, H. and Mills, D. S. (2019) ‘The canine frustration questionnaire—development of a new psychometric tool for measuring frustration in domestic dogs (Canis familiaris)’, Frontiers in Veterinary Science, 6, p. 152. doi: 10.3389/fvets.2019.00152.

Miklósi, Á. and Topál, J. (2013) ‘What does it take to become ‘best friends’? Evolutionary changes in canine social competence’, Trends in Cognitive Sciences, 17(6), pp. 287–294. doi: 10.1016/j.tics.2013.04.005.

Molinaro, H. G. and Wynne, C. D. L. (2025) ‘Barking up the wrong tree: Human perception of dog emotions is influenced by extraneous factors’, Anthrozoös, 38(2), pp. 349–370. doi: 10.1080/08927936.2025.2469400.

Mota-Rojas, D., Marcet-Rius, M., Ogi, A., Hernández-Ávalos, I., Mariti, C., Martínez-Burnes, J., Mora-Medina, P., Casas, A., Domínguez, A., Reyes, B. and Gazzano, A. (2021) ‘Current advances in assessment of dog’s emotions, facial expressions, and their use for clinical recognition of pain’, Animals, 11(11), p. 3334. doi: 10.3390/ani11113334.

Palestrini, C., Minero, M., Cannas, S., Rossi, E. and Frank, D. (2010) ‘Video analysis of dogs with separation-related behaviors’, Applied Animal Behaviour Science, 124(1–2), pp. 61–67. doi: 10.1016/j.applanim.2010.01.014.

Pedretti, G., Canori, C., Marshall-Pescini, S., Palme, R., Pelosi, A. and Valsecchi, P. (2022) ‘Audience effect on domestic dogs’ behavioural displays and facial expressions’, Scientific Reports, 12(1), p. 9747. doi: 10.1038/s41598-022-13566-7.

Pickersgill, O., Mills, D. S. and Guo, K. (2023) ‘Owners’ beliefs regarding the emotional capabilities of their dogs and cats’, Animals, 13(5), p. 820. doi: 10.3390/ani13050820.

Quaranta, A., Siniscalchi, M. and Vallortigara, G. (2007) ‘Asymmetric tail-wagging responses by dogs to different emotive stimuli’, Current Biology, 17(6), pp. R199–R201. doi: 10.1016/j.cub.2007.02.008.

Raman, S., Maskeliūnas, R. and Damaševičius, R. (2021) ‘Markerless dog pose recognition in the wild using resnet deep learning model’, Computers, 11(1), p. 2. doi: 10.3390/computers11010002.

Rugaas, T. (2006) On Talking Terms With Dogs: Calming Signals. 2nd ed. Wenatchee, WA, USA: Dogwise Publishing. ISBN: 9781929242368. Available at: https://www.dogwise.com/on-talking-terms-with-dogs-calming-signals-2nd-edition.

Savalli, C., Resende, B. and Gaunet, F. (2016) ‘Eye contact is crucial for referential communication in pet dogs’, PLoS One, 11(9), p. e0162161. doi: 10.1371/journal.pone.0162161.

Serpell, J. (2017) The Domestic Dog: Its Evolution, Behavior and Interactions With People. 2nd ed. Cambridge, UK: Cambridge University Press ISBN: 9781107024144. Available at: https://www.cambridge.org/9781107024144.

Simpson, B. S. (1997) ‘Canine communication’, Veterinary Clinics of North America: Small Animal Practice, 27(3), pp. 445–464. doi: 10.1016/s0195-5616(97)50048-9.

Siniscalchi, M., D’Ingeo, S., Minunno, M. and Quaranta, A. (2018) ‘Communication in dogs’, Animals, 8(8), p. 131. doi: 10.3390/ani8080131.

Siniscalchi, M., Lusito, R., Vallortigara, G., and Quaranta, A. (2013) ‘Seeing left- or right-asymmetric tail wagging produces different emotional responses in dogs’, Current Biology, 23(22), pp. 2279–2282. doi: 10.1016/j.cub.2013.09.027.

Stellato, A. C., Flint, H. E., Widowski, T. M., Serpell, J. A. and Niel, L. (2017) ‘Assessment of fear-related behaviours displayed by companion dogs (Canis familiaris) in response to social and non-social stimuli’, Applied Animal Behaviour Science, 188, pp. 84–90. doi: 10.1016/j.applanim.2016.12.007.

Tebelmann, H. and Ganslosser, U. (2024) ‘Differences in boldness between Eurasian and American wolves (Canis lupus) might be based on adaptive mechanisms’, Ecology and Evolution14(8), р. e70178. doi: 10.1002/ece3.70178.

Topál, J., Kis, A. and Oláh, K. (2014) ‘Chapter 11 — Dogs’ sensitivity to human ostensive cues: A unique adaptation?’, in in Kaminski, J. and Marshall-Pescini, S. (eds.) The Social Dog: Behavior and Cognition. London: Academic Press, pp. 319–346. doi: 10.1016/b978-0-12-407818-5.00011-5.

Vas, J., Topál, J., Gácsi, M., Miklósi, Á. and Csányi, V. (2005) ‘A friend or an enemy? Dogs’ reaction to an unfamiliar person showing behavioural cues of threat and friendliness at different times’, Applied Animal Behaviour Science, 94(1‑2), pp. 99–115. doi: 10.1016/j.applanim.2005.02.001.

Virányi, Z., Gácsi, M., Kubinyi, E., Topál, J., Belényi, B., Ujfalussy, D. and Miklósi, A. (2008) ‘Comprehension of human pointing gestures in young human-reared wolves (Canis lupus) and dogs (Canis familiaris)’, Animal Cognition, 11(3), pp. 373–387. doi: 10.1007/s10071-007-0127-y.

Völter, C. J., Gerwisch, K., Berg, P., Virányi, Z. and Huber, L. (2025) ‘Using mobile eye tracking to study dogs’ understanding of human referential communication’, Proceedings of the Royal Society B: Biological Sciences, 292(2040), p. 20242765. doi: 10.1098/rspb.2024.2765.

Waller, B. M., Peirce, K., Caeiro, C. C., Scheider, L., Burrows, A. M., McCune, S. and Kaminski, J. (2013) ‘Paedomorphic facial expressions give dogs a selective advantage’, PLoS One, 8(12), p. e82686. doi: 10.1371/journal.pone.0082686.

Walsh, E. A., Meers, L. L., Samuels, W. E., Boonen, D., Claus, A., Duarte-Gan, C., Stevens, V., Contalbrigo, L. and Normando, S. (2024) ‘Human-dog communication: How body language and non-verbal cues are key to clarity in dog directed play, petting and hugging behaviour by humans’, Applied Animal Behaviour Science, 272, p. 106206. doi: 10.1016/j.applanim.2024.106206.

Zepeda, J. A., Pérez-Espinosa, H., Reyes Meza, V., Urbina Escalante, M., Gutiérrez Serafin, B. and Arteaga Castañeda, M. de L. (2024) ‘Differences in small-breed dogs’ body language and vocalizations in a negative context’, Veterinaria México OA, 11, pp. 1–16. doi: 10.22201/fmvz.24486760e.2024.1227.