A Preliminary Assessment of Equine Affect in Equine-Assisted Services

References

• Aguilera, G. (1994). Regulation of pituitary ACTH secretion during chronic stress. Frontiers in Neuroendocrinology, 15(4), 321–350. https://doi.org/10.1006/frne.1994.1013
   PubMed Web of Science ®Google Scholar
• Arrazola, A., & Merkies, K. (2020). Effect of human attachment style on horse behaviour and physiology during equine-assisted activities–A pilot study. Animals, 10(7), 1156. https://doi.org/10.3390/ani10071156
   Web of Science ®Google Scholar
• Bartolomé, E., Sánchez, M. J., Molina, A., Schaefer, A. L., Cervantes, I., & Valera, M. (2013). Using eye temperature and heart rate for stress assessment in young horses competing in jumping competitions and its possible influence on sport performance. Animals, 7(12), 2044–2053. https://doi.org/10.1017/S1751731113001626
   Google Scholar
• Bell, C., Rogers, S., Taylor, J. & Busby, D. (2019). Improving the recognition of equine affective states. Animals, 9(12), 1124. https://doi.org/10.3390/ani9121124
   Web of Science ®Google Scholar
• Boissy, A., Manteuffel, G., Jensen, M. B., Moe, R. O., Spruijt, B., Keeling, L. J., Winckler, C., Forkman, B., Dimitrov, I., Langbein, J., Bakken, M., Veissier, I., & Aubert, A. (2007). Assessment of positive emotions in animals to improve their welfare. Physiology and Behavior, 92(3), 375–397. https://doi.org/10.1016/j.physbeh.2007.02.003
   PubMed Web of Science ®Google Scholar
• Bornmann, T., Randle, H., & Williams, J. (2021). Investigating equestrians' perceptions of horse happiness: An exploratory study. Journal of Equine Veterinary Science, 104, 103697. https://doi.org/10.1016/J.JEVS.2021.103697
   PubMed Web of Science ®Google Scholar
• Brubaker, L., Schroeder, K., Sherwood, D., Stroud, D., & Udell, M. A. (2021). Horse behavior towards familiar and unfamiliar humans: Implications for equine-assisted services. Animals, 11(8), 2369. https://doi.org/10.3390/ANI11082369
   Web of Science ®Google Scholar
• Chamove, A. S., Crawley-Hartrick, O. J. E., & Stafford, K. J. (2002). Horse reactions to human attitudes and behavior. Anthrozoös, 15(4), 323–331. https://doi.org/10.2752/089279302786992423
   Web of Science ®Google Scholar
• Christensen, J. W., Munk, R., Hawson, L., Palme, R., Larsen, T., Egenvall, A., König von Borstel, U. U., & Rørvang, M. V. (2021). Rider effects on horses’ conflict behaviour, rein tension, physiological measures and rideability scores. Applied Animal Behaviour Science, 234, 105184. https://doi.org/10.1016/j.applanim.2020.105184
   Web of Science ®Google Scholar
• Cravana, C., Fazio, E., Ferlazzo, A., & Medica, P. (2021). Therapeutic riding horses: Using a hypothalamic-pituitary-adrenal axis measure to assess the physiological stress response to different riders. Journal of Veterinary Behavior, 46, 18–23. https://doi.org/10.1016/j.jveb.2021.07.013
   Google Scholar
• de Santis, M., Contalbrigo, L., Borgi, M., Cirulli, F., Luzi, F., Redaelli, V., Stefani, A., Toson, M., Odore, R., Vercelli, C., Valle, E., & Farina, L. (2017). Equine assisted interventions (EAIs): Methodological considerations for stress assessment in horses. Veterinary Sciences, 4(3), 44. https://doi.org/10.3390/vetsci4030044
   PubMedGoogle Scholar
• Dewkett, M. (2016). Horse selection, training, and maintenance. In L. Thompson & S. Stringham (Eds.), The comprehensive guide to equine-assisted activities and therapies (pp. 587–634). Dog Ear Publishing.
   Google Scholar
• Duarte, J., & Pinto-Gouveia, J. (2017). Positive affect and parasympathetic activity: Evidence for a quadratic relationship between feeling safe and content and heart rate variability. Psychiatry Research, 257, 284–289. https://doi.org/10.1016/j.psychres.2017.07.077
   PubMed Web of Science ®Google Scholar
• Dyson, S., Bondi, A., Routh, J., Pollard, D., Preston, T., McConnell, C., & Kydd, J. (2022). Do owners recognise abnormal equine behaviour when tacking-up and mounting? A comparison between responses to a questionnaire and real-time observations. Equine Veterinary Education, 34(9), e375–e384. https://doi.org/10.1111/EVE.13471
   Web of Science ®Google Scholar
• Fazio, E., Medica, P., Cravana, C., & Ferlazzo, A. (2013). Hypothalamic-pituitary-adrenal axis responses of horses to therapeutic riding program: Effects of different riders. Physiology and Behavior, 118, 138–143. https://doi.org/10.1016/j.physbeh.2013.05.009
   PubMed Web of Science ®Google Scholar
• Fine, A., & Andersen, S. (2021). A commentary on the contemporary issues confronting animal assisted and equine assisted interactions. Journal of Equine Veterinary Science, 100, 103436. https://doi.org/10.1016/j.jevs.2021.103436
   PubMed Web of Science ®Google Scholar
• Fine, A., Beck, A., & Ng, Z. (2019). The state of animal-assisted interventions: Addressing the contemporary issues that will shape the future. International Journal of Environmental Research and Public Health, 16(20), 3997. https://doi.org/10.3390/ijerph16203997
   PubMed Web of Science ®Google Scholar
• Finlayson, K., Lampe, J. F., Hintze, S., Würbel, H., & Melotti, L. (2016). Facial indicators of positive emotions in rats. PLoS ONE, 11(11), e0166446. https://doi.org/10.1371/journal.pone.0166446
   PubMed Web of Science ®Google Scholar
• Green, T. C., & Mellor, D. J. (2011). Extending ideas about animal welfare assessment to include “quality of life” and related concepts. New Zealand Veterinary Journal, 59(6), 263–271. https://doi.org/10.1080/00480169.2011.610283
   PubMed Web of Science ®Google Scholar
• Guinnefollau, L., Bolwell, C. F., Gee, E. K., Norman, E. J., & Rogers, C. W. (2021). Horses’ physiological and behavioural responses during undergraduate veterinary practical teaching classes. Applied Animal Behaviour Science, 241, 105371. https://doi.org/10.1016/j.applanim.2021.105371
   Web of Science ®Google Scholar
• Hall, C., Kay, R., & Yarnell, K. (2014). Assessing ridden horse behavior: Professional judgment and physiological measures. Journal of Veterinary Behavior, 9(1), 22–29. https://doi.org/10.1016/j.jveb.2013.09.005
   Google Scholar
• Hama, H., Yogo, M., & Matsuyama, Y. (1996). Effects of stroking horses on both humans’ and horses’ heart rate responses. Japanese Psychological Research, 38(2), 66–73. https://doi.org/10.1111/j.1468-5884.1996.tb00009.x
   Web of Science ®Google Scholar
• Harrison, A. (2023, August 23). Planning your horse’s retirement. Equus. https://equusmagazine.com/horse-care/planning-your-horses-retirement/
   Google Scholar
• Hemingway, A. (2021). The embodied nature of horse human communication: A feasibility study of an equine assisted intervention; benefits for horses and humans. In A. López-Varela Azcárate (Ed.), Mind and matter – Challenges and opportunities in cognitive semiotics and aesthetics (pp. 69–82). IntechOpen.
   Google Scholar
• Holcomb, K. E., Tucker, C. B., & Stull, C. L. (2013). Physiological, behavioral, and serological responses of horses to shaded or unshaded pens in a hot, sunny environment. Journal of Animal Science, 91(12), 5926–5936. https://doi.org/10.2527/jas.2013-6497
   PubMed Web of Science ®Google Scholar
• Hovey, M. R., Davis, A., Chen, S., Godwin, P., & Porr, C. S. (2021). Evaluating stress in riding horses: Part one—Behavior assessment and serum cortisol. Journal of Equine Veterinary Science, 96, 103297. https://doi.org/10.1016/j.jevs.2020.103297
   PubMed Web of Science ®Google Scholar
• Ille, N., Aurich, J., Erber, R., & Aurich, C. (2014). Comparison of heart rate and heart rate variability obtained by heart rate monitors and simultaneously recorded electrocardiogram signals in nonexercising horses. Journal of Veterinary Behavior, 9(6), 341–346. https://doi.org/10.1016/j.jveb.2014.07.006
   Google Scholar
• Janczarek, I., Stachurska, A., Wilk, I., Krakowski, L., Przetacznik, M., Zastrzeżyńska, M., & Kuna-Broniowska, I. (2018). Emotional excitability and behaviour of horses in response to stroking various regions of the body. Animal Science Journal, 89(11), 1599–1608. https://doi.org/10.1111/asj.13104
   PubMed Web of Science ®Google Scholar
• Jansson, A., Lindgren, G., Velie, B. D., & Solé, M. (2021). An investigation into factors influencing basal eye temperature in the domestic horse (Equus caballus) when measured using infrared thermography in field conditions. Physiology and Behavior, 228, 113218. https://doi.org/10.1016/j.physbeh.2020.113218
   PubMed Web of Science ®Google Scholar
• Johnson, R. A., Johnson, P. J., Megarani, D. V., Patel, S. D., Yaglom, H. D., Osterlind, S., Grindler, K., Vogelweid, C. M., Parker, T. M., Pascua, C. K., & Crowder, S. M. (2017). Horses working in therapeutic riding programs: Cortisol, adrenocorticotropic hormone, glucose, and behavior stress indicators. Journal of Equine Veterinary Science, 57, 77–85. https://doi.org/10.1016/j.jevs.2017.05.006
   Web of Science ®Google Scholar
• Kaiser, L., Heleski, C. R., Siegford, J., & Smith, K. A. (2006). Exploring the bond: Stress-related behaviors among horses used in a therapeutic riding program. Journal of the American Veterinary Medical Association, 228(1), 39–45. https://doi.org/10.2460/javma.228.1.39
   PubMed Web of Science ®Google Scholar
• Kelly, K. J., McDuffee, L. A., & Mears, K. (2021). The effect of human–horse interactions on equine behaviour, physiology, and welfare: A scoping review. Animals, 11(10), 2782. https://doi.org/10.3390/ani11102782
   Web of Science ®Google Scholar
• König von Borstel, U., Euent, S., Graf, P., König, S., & Gauly, M. (2011). Equine behaviour and heart rate in temperament tests with or without rider or handler. Physiology and Behavior, 104(3), 454–463. https://doi.org/10.1016/j.physbeh.2011.05.010
   PubMed Web of Science ®Google Scholar
• Lansade, L., Bonneau, C., Parias, C., & Biau, S. (2019). Horse’s emotional state and rider safety during grooming practices, a field study. Applied Animal Behaviour Science, 217, 43–47. https://doi.org/10.1016/j.applanim.2019.04.017
   Web of Science ®Google Scholar
• Lansade, L., Nowak, R., Lainé, A.-L., Leterrier, C., Bonneau, C., Parias, C., & Bertin, A. (2018). Facial expression and oxytocin as possible markers of positive emotions in horses. Scientific Reports, 8(1), 1–11. https://doi.org/10.1038/s41598-018-32993-z
   PubMedGoogle Scholar
• Lee, K. E., Kim, J. G., Lee, H., & Kim, B. S. (2021). Behavioral and cardiac responses in mature horses exposed to a novel object. Journal of Animal Science and Technology, 63(3), 651–661. https://doi.org/10.5187/jast.2021.e51
   PubMed Web of Science ®Google Scholar
• le Jeune, S. S., Williams, C. A., Pypendop, B. H., Ohmura, H., & Jones, J. H. (2014). Does acupuncture acutely affect heart rate variability in horses? Journal of Equine Veterinary Science, 34(9), 1084–1090. https://doi.org/10.1016/j.jevs.2014.06.010
   Web of Science ®Google Scholar
• Luna, D., & Tadich, T. A. (2019). Why should human–animal interactions be included in research of working equids’ welfare? Animals, 9(2), 42. https://doi.org/10.3390/ani9020042
   Web of Science ®Google Scholar
• Lynch, J. J., Frederick Fregin, G., Mackie, J. B., & Monroe, R. R. (1974). Heart rate changes in the horse to human contact. Psychophysiology, 11(4), 472–478. https://doi.org/10.1111/j.1469-8986.1974.tb00575.x
   PubMed Web of Science ®Google Scholar
• Marc, M., Parvizi, N., Ellendorff, F., Kallweit, E., & Elsaesser, F. (2000). Plasma cortisol and ACTH concentrations in the warmblood horse in response to a standardized treadmill exercise test as physiological markers for evaluation of training status. Journal of Animal Science, 78(7), 1936. https://doi.org/10.2527/2000.7871936x
   PubMed Web of Science ®Google Scholar
• Mazzola, S. M., Colombani, C., Pizzamiglio, G., Cannas, S., Palestrini, C., Costa, E. D., Gazzonis, A. L., Bionda, A., & Crepaldi, P. (2021). Do you think I am living well? A four-season hair cortisol analysis on leisure horses in different housing and management conditions. Animals, 11(7), 2141. https://doi.org/10.3390/ani11072141
   Web of Science ®Google Scholar
• McBride, S. D., Hemmings, A., & Robinson, K. (2004). A preliminary study on the effect of massage to reduce stress in the horse. Journal of Equine Veterinary Science, 24(2), 76–81. https://doi.org/10.1016/j.jevs.2004.01.014
   Web of Science ®Google Scholar
• McDaniel Peters, B. C., & Wood, W. (2017). Autism and equine-assisted interventions: A systematic mapping review. Journal of Autism and Developmental Disorders, 47(10), 3220–3242. https://doi.org/10.1007/S10803-017-3219-9/TABLES/5
   PubMed Web of Science ®Google Scholar
• McDonnell, S. (2003). The equid ethogram: A practical field guide to horse behavior (1st ed.). Eclipse Press.
   Google Scholar
• McDonnell, S. M., & Haviland, J. C. S. (1995). Agonistic ethogram of the equid bachelor band. Applied Animal Behaviour Science, 43(3), 147–188. https://doi.org/10.1016/0168-1591(94)00550-X
   Web of Science ®Google Scholar
• McDuffee, L., Mills, M., McNiven, M., & Montelpare, W. (2019). Establishing statistical stability for heart rate variability in horses. Journal of Veterinary Behavior, 32, 30–35. https://doi.org/10.1016/j.jveb.2019.05.003
   Google Scholar
• McKinney, C., Mueller, M. K., & Frank, N. (2015). Effects of therapeutic riding on measures of stress in horses. Journal of Equine Veterinary Science, 35(11–12), 922–928. https://doi.org/10.1016/j.jevs.2015.08.015
   Web of Science ®Google Scholar
• Mellor, D. J. (2015). Positive animal welfare states and reference standards for welfare assessment. New Zealand Veterinary Journal, 63(1), 17–23. https://doi.org/10.1080/00480169.2014.926802
   PubMed Web of Science ®Google Scholar
• Mendonça, T., Bienboire-Frosini, C., Menuge, F., Leclercq, J., Lafont-Lecuelle, C., Arroub, S., & Pageat, P. (2019). The impact of equine-assisted therapy on equine behavioral and physiological responses. Animals, 9(7), 409. https://doi.org/10.3390/ani9070409
   Web of Science ®Google Scholar
• Menor-Rodríguez, M. J., Martín, M. S., Sánchez-García, J. C., Montiel-Troya, M., Cortés-Martín, J., & Rodríguez-Blanque, R. (2021). Role and effects of hippotherapy in the treatment of children with cerebral palsy: A systematic review of the literature. Journal of Clinical Medicine, 10(12), 2589. https://doi.org/10.3390/jcm10122589
   PubMed Web of Science ®Google Scholar
• Palomar-Ciria, N., & Bello, H. J. (2023). Equine-assisted therapy in post-traumatic-stress disorder: A systematic review and meta-analysis. Journal of Equine Veterinary Science, 128, 104871. https://doi.org/10.1016/j.jevs.2023.104871
   PubMed Web of Science ®Google Scholar
• Pasiuk, E. L., Rudd, C., Webberson, E., Anderson, N. C., Hall, N., Stellato, A. C., & Schroeder, K. (2023). Investigating human experiences and perceptions of unmounted activities commonly practiced in equine-assisted services. Human–Animal Interactions, 10(1). https://doi.org/10.1079/hai.2023.0045
   Google Scholar
• Popescu, S., & Diugan, E. A. (2013). The relationship between behavioral and other welfare indicators of working horses. Journal of Equine Veterinary Science, 33(1), 1–12. https://doi.org/10.1016/j.jevs.2012.04.001
   Web of Science ®Google Scholar
• Proctor, H. S., & Carder, G. (2014). Can ear postures reliably measure the positive emotional state of cows? Applied Animal Behaviour Science, 161(1), 20–27. https://doi.org/10.1016/j.applanim.2014.09.015
   Google Scholar
• Proctor, H. S., & Carder, G. (2015). Nasal temperatures in dairy cows are influenced by positive emotional state. Physiology and Behavior, 138, 340–344. https://doi.org/10.1016/j.physbeh.2014.11.011
   PubMed Web of Science ®Google Scholar
• R Core Team (2021). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. https://www.R-project.org/
   Google Scholar
• Rankins, E. M., Wickens, C. L., McKeever, K. H., & Malinowski, K. (2021). A survey of horse selection, longevity, and retirement in equine-assisted services in the United States. Animals, 11(8), 2333. https://doi.org/10.3390/ani11082333
   Web of Science ®Google Scholar
• Rizzo, M., Arfuso, F., Giannetto, C., Giudice, E., Longo, F., di Pietro, S., & Piccione, G. (2017). Cortisol levels and leukocyte population values in transported and exercised horses after acupuncture needle stimulation. Journal of Veterinary Behavior, 18, 56–61. https://doi.org/10.1016/j.jveb.2016.12.006
   Google Scholar
• Safryghin, A., Hebesberger, D. V., & Wascher, C. A. F. (2019). Testing for behavioral and physiological responses of domestic horses (Equus caballus) across different contexts – Consistency over time and effects of context. Frontiers in Psychology, 10(849). https://doi.org/10.3389/fpsyg.2019.00849
   PubMedGoogle Scholar
• Schroeder, K., Arant, M., Hekkert, C., & Protopopova, A. (2023). Exploring the social reinforcing value of brushing in equine-assisted services: A comparative study with food reinforcement. Human–Animal Interactions. https://doi.org/10.1079/hai.2023.0010
   Google Scholar
• Seaman, S. C., Davidson, H. P. B., & Waran, N. K. (2002). How reliable is temperament assessment in the domestic horse (Equus caballus)? Applied Animal Behaviour Science, 78(2–4), 175–191. https://doi.org/10.1016/S0168-1591(02)00095-3
   Web of Science ®Google Scholar
• Soroko, M., Howell, K., Zwyrzykowska, A., Dudek, K., Zielińska, P., & Kupczyński, R. (2016). Maximum eye temperature in the assessment of training in racehorses: Correlations with salivary cortisol concentration, rectal temperature, and heart rate. Journal of Equine Veterinary Science, 45, 39–45. https://doi.org/10.1016/j.jevs.2016.06.005
   Web of Science ®Google Scholar
• Squibb, K., Griffin, K., Favier, R., & Ijichi, C. (2018). Poker face: Discrepancies in behaviour and affective states in horses during stressful handling procedures. Applied Animal Behaviour Science, 202, 34–38. https://doi.org/10.1016/j.applanim.2018.02.003
   Web of Science ®Google Scholar
• Stomp, M., Leroux, M., Cellier, M., Henry, S., Hausberger, M., & Lemasson, A. (2018). Snort acoustic structure codes for positive emotions in horses. The Science of Nature, 105(9), 1–9. https://doi.org/10.1007/S00114-018-1582-9
   Google Scholar
• Stomp, M., Leroux, M., Cellier, M., Henry, S., Lemasson, A., & Hausberger, M. (2018). An unexpected acoustic indicator of positive emotions in horses. PLoS ONE, 13(7), e0197898. https://doi.org/10.1371/journal.pone.0197898
   PubMed Web of Science ®Google Scholar
• Stomp, M., Masson, A., Henry, S., Hausberger, M., & Lesimple, C. (2020). Could snorts inform us on how horses perceive riding? Behavioural Processes, 172, 104041. https://doi.org/10.1016/j.beproc.2020.104041
   PubMed Web of Science ®Google Scholar
• Strand, S. C., Tiefenbacher, S., Haskell, M., Hosmer, T., McDonnell, S. M., & Freeman, D. A. (2002). Behavior and physiologic responses of mares to short-term isolation. Applied Animal Behaviour Science, 78(2–4), 145–157. https://doi.org/10.1016/S0168-1591(02)00106-5
   Web of Science ®Google Scholar
• Stucke, D., Große Ruse, M., & Lebelt, D. (2015). Measuring heart rate variability in horses to investigate the autonomic nervous system activity – Pros and cons of different methods. Applied Animal Behaviour Science, 166, 1–10. https://doi.org/10.1016/j.applanim.2015.02.007
   Web of Science ®Google Scholar
• Thayer, E. R., & Stevens, J. R. (2022). Effects of human–animal interactions on affect and cognition. Human–Animal Interaction Bulletin, 10(2), 73–98. https://doi.org/10.1079/HAI.2022.0015
   Google Scholar
• Thorbergson, Z. W., Nielsen, S. G., Beaulieu, R. J., & Doyle, R. E. (2016). Physiological and behavioral responses of horses to wither scratching and patting the neck when under saddle. Journal of Applied Animal Welfare Science, 19(3), 245–259. https://doi.org/10.1080/10888705.2015.1130630
   PubMed Web of Science ®Google Scholar
• Torcivia, C., & McDonnell, S. (2021). Equine discomfort ethogram. Animals, 11(2), 580. https://doi.org/10.3390/ani11020580
   Web of Science ®Google Scholar
• van Dierendonck, M., & Goodwin, D. (2005). Social contact in horses: Implications for human–horse interactions. In F. H. de Jonge & R. van den Bos (Eds.), The human–animal relationship (pp. 65–81). Royal Van Gorcum.
   Google Scholar
• van Dierendonck, M. C., & Spruijt, B. M. (2012). Coping in groups of domestic horses – Review from a social and neurobiological perspective. Applied Animal Behaviour Science, 138(3–4), 194–202. https://doi.org/10.1016/j.applanim.2012.02.007
   Web of Science ®Google Scholar
• Vitale, V., Balocchi, R., Varanini, M., Sgorbini, M., Macerata, A., Sighieri, C., & Baragli, P. (2013). The effects of restriction of movement on the reliability of heart rate variability measurements in the horse (Equus caballus). Journal of Veterinary Behavior, 8(5), 400–403. https://doi.org/10.1016/j.jveb.2013.02.003
   Google Scholar
• von Borell, E., Langbein, J., Després, G., Hansen, S., Leterrier, C., Marchant-Forde, J., Marchant-Forde, R., Minero, M., Mohr, E., Prunier, A., Valance, D., & Veissier, I. (2007). Heart rate variability as a measure of autonomic regulation of cardiac activity for assessing stress and welfare in farm animals – A review. Physiology and Behavior, 92(3), 293–316. https://doi.org/10.1016/j.physbeh.2007.01.007
   PubMed Web of Science ®Google Scholar
• Watson, E., Davis, A., Splan, R., & Porr, C. A. S. (2020). Characterization of horse use in therapeutic horseback riding programs in the United States: A pilot survey. Journal of Equine Veterinary Science, 92, 103157. https://doi.org/10.1016/j.jevs.2020.103157
   PubMed Web of Science ®Google Scholar
• White, E., Zippel, J., & Kumar, S. (2020). The effect of equine-assisted therapies on behavioural, psychological and physical symptoms for children with attention deficit/hyperactivity disorder: A systematic review. Complementary Therapies in Clinical Practice, 39, 101101. https://doi.org/10.1016/j.ctcp.2020.101101
   PubMed Web of Science ®Google Scholar
• White-Lewis, S. (2020). Equine-assisted therapies using horses as healers: A concept analysis. Nursing Open, 7(1), 58–67. https://doi.org/10.1002/nop2.377
   PubMed Web of Science ®Google Scholar
• Yeates, J. W., & Main, D. C. J. (2008). Assessment of positive welfare: A review. Veterinary Journal, 175(3), 293–300. https://doi.org/10.1016/j.tvjl.2007.05.009
   PubMed Web of Science ®Google Scholar
• Young, T., Creighton, E., Smith, T., & Hosie, C. (2012). A novel scale of behavioural indicators of stress for use with domestic horses. Applied Animal Behaviour Science, 140(1–2), 33–43. https://doi.org/10.1016/j.applanim.2012.05.008
   Web of Science ®Google Scholar
• Zupan, M., Buskas, J., Altimiras, J., & Keeling, L. J. (2016). Assessing positive emotional states in dogs using heart rate and heart rate variability. Physiology and Behavior, 155, 102–111. https://doi.org/10.1016/j.physbeh.2015.11.027
   PubMed Web of Science ®Google Scholar