All PM, Terms J (2013) The tail movements of ungulates, canids and felids with particular reference to their causation and function as displays. BRILL Stable.  56:69–115. Acessed on December 30, 2018

Amelia A, Macrae M, Makowska IJ, Macrae AM, Makowska IJ, Fraser D (2018) Initial evaluation of facial expressions and behaviours of harbour seal pups (Phoca vitulina) in response to tagging and microchipping. Applied Animal Behaviour Science. doi:S0168159118302235

Artelle KA, Dumouli, LK, Reimchen TE (2011) Behavioural responses of dogs to asymmetrical tail wagging of a robotic dog replica. Laterality. doi:10.1080/13576500903386700

Barros J, Maria R, Pires L, Ambrósio LA, Oliveira A De, Trevisan G (2017) Expressão facial , vocalização e posturas anômalas em bovinos submetidos à eletroejaculação convencional. PubVet 11:1074-1187.

Bellegarde LGA, Haskell MJ, Duvaux-ponter C, Weiss A, Boissy A, Erhard HW (2017) Face-based perception of emotions in dairy goats. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2017.03.014

Boissy A, Aubert A, Désiré L, Greiveldinger L, Delval E, Veissier I (2011) Cognitive sciences to relate ear postures to emotions in sheep. Animal Welfare 20:47–56.

Briefer E F, Tettamanti F, Mcelligott A G (2015) Emotions in goats : mapping physiological , behavioural and vocal profiles. Animal Behaviour. doi:10.1016/j.anbehav.2014.11.002

Costa J H C, von Keyserlingk M A G, Weary D M (2016) Invited review: Effects of group housing of dairy calves on behavior, cognition, performance, and health. Journal of Dairy Science. doi:10.3168/JDS.2015-10144

Dalla Costa E, Minero M, Lebelt D, Stucke D, Canali E, Leach M C (2014) Development of the Horse Grimace Scale (HGS) as a pain assessment tool in horses undergoing routine castration. PLoS One. doi:10.1371/journal.pone.0092281

Flint H E, Coe J B, Serpell J A, Pearl D L, Niel L (2018) Identification of fear behaviors shown by puppies in response to non-social stimuli. Journal of Veterinary Behaviour. doi:10.1016/j.jveb.2018.07.012

Forkman B, Boissy A, Meunier-Salaün M C, Canali E, Jones R B (2007) A critical review of fear tests used on cattle, pigs, sheep, poultry and horses. Physiology & Behaviour. doi:10.1016/j.physbeh.2007.03.016

Fraser D, Duncan I J H, Edwards S A, Grandin T, Gregory N G, Guyonnet V, Hemsworth P H, Huertas S M, Huzzey J M, Mellor D J, Mench J A, Špinka M, Whay H R (2013) General Principles for the welfare of animals in production systems: The underlying science and its application. Veterinary Journal. doi:10.1016/j.tvjl.2013.06.028

Futro A, Barclay D, Zhu Q, Baxter E M, D’Eath R B, Jack M, Talbot D (2018) Automatic early warning of tail biting in pigs: 3D cameras can detect lowered tail posture before an outbreak. PLoS One. doi:10.1371/journal.pone.0194524

Gleerup K B, Andersen P H, Munksgaard L, Forkman B (2015) Pain evaluation in dairy cattle. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2015.08.023

Gómez Y, Bieler R, Hankele A K, Zähner M, Savary P, Hillmann E (2018) Evaluation of visible eye white and maximum eye temperature as non-invasive indicators of stress in dairy cows. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2017.10.001

Grant C (2004) Behavioural responses of lambs to common painful husbandry procedures. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2004.01.011

Gu Jingqiu, Wang Zhihai, GAO Ronghua (2017) Cow behavior recognition based on image analysis and activities. International Journal of Agricultural and Biological Engineering. doi:10.3965/j.ijabe.20171003.3080

Halachmi I, Guarino M, Bewley J, Pastell M (2018) Smart Animal Agriculture: Application of Real-Time Sensors to Improve Animal Well-Being and Production. Annual Reviews Animal Bioscience. doi:10.1146/annurev-animal-020518-114851

Jacobs J A, Siegford J M (2012) Invited review: The impact of automatic milking systems on dairy cow management, behavior, health, and welfare. Journal of Dairy Science. doi:10.3168/jds.2011-4943

Jimenez R E, Adcock S J J, Tucker C B (2019) Acute pain responses in dairy calves undergoing cornual nerve blocks with or without topical anesthetic. Journal of Dairy Science. doi:10.3168/jds.2018-15445

Keating S C J, Thomas A A, Flecknell P A, Leach M C (2012) Evaluation of EMLA Cream for Preventing Pain during Tattooing of Rabbits: Changes in Physiological, Behavioural and Facial Expression Responses. PLoS One doi:10.1371/journal.pone.0044437

Kopaczka M, Ernst L, Heckelmann J, Schorn C, Tolba R, Merhof D (2018) Automatic Key Frame Extraction from Videos for Efficient Mouse Pain Scoring. 2018 5th Int. Conf. Signal Process. Integr. Networks, SPIN. doi:10.1109/SPIN.2018.8474046

Kumar S, Pandey A, Sai Ram Satwik K, Kumar S, Singh S K, Singh A K, Mohan A (2018a) Deep learning framework for recognition of cattle using muzzle point image pattern. Measurement. doi:10.1016/j.measurement.2017.10.064

Kumar S, Singh S K, Abidi A I, Datta D, Sangaiah A K (2018b) Group Sparse Representation Approach for Recognition of Cattle on Muzzle Point Images. International Journal of Parallel Programming. doi:10.1007/s10766-017-0550-x

Kumar S, Singh S K, Datta T, Gupta HP (2016a) A Fast Cattle Recognition System using Smart devices. Proceedings of the 24th ACM international conference on Multimedia. doi:10.1145/2964284.2973829

Kumar S, Singh S K, Singh R S, Singh A K, Tiwari S (2017) Real-time recognition of cattle using animal biometrics. Journal of Real-Time Image Processing. doi:10.1007/s11554-016-0645-4

Kumar S, Tiwari S, Singh S K (2016b) Face Recognition of Cattle: Can it be Done? Proceedings of the National Academy of Sciences, India Section A: Physical Sciences. doi:10.1007/s40010-016-0264-2

Lakestani N N, Donaldson M L, Waran N (2014) Interpretation of Dog Behavior by Children and Young Adults. Anthrozoos. doi:10.2752/175303714X13837396326413

Lambert (Proctor) H S, Carder G (2017) Looking into the eyes of a cow: Can eye whites be used as a measure of emotional state? Applied Animal Behaviour Science. doi:10.1016/j.applanim.2016.11.005

Lambert H, Carder G (2019) Positive and negative emotions in dairy cows: Can ear postures be used as a measure? Behaviour Processes. doi:10.1016/j.beproc.2018.12.007

Langford D J, Bailey A L, Chanda M L, Clarke S E, Drummond T E, Echols S, Glick S, Ingrao J, Klassen-Ross T, Lacroix-Fralish M L, Matsumiya L, Sorge R E, Sotocinal S G, Tabaka J M, Wong D, Van Den Maagdenberg A M J M, Ferrari M D, Craig K D, Mogil J S (2010) Coding of facial expressions of pain in the laboratory mouse. Nature Methods. doi:10.1038/nmeth.1455

Li Z, Shen S, Ge C, Li X (2019) Cow Individual Identification Based on Convolutional Neural Network. Proceedings of the 2018 International Conference on Algorithms, Computing and Artificial Intelligence. doi:10.1145/3302425.3302460

Lu Y, Mahmoud M, Robinson P (2017) Estimating sheep pain level using facial action unit detection. Biometrics. doi:10.1109/FG.2017.56

McLennan K M, Rebelo C J B, Corke M J, Holmes M A, Leach M C, Constantino-Casas F (2016) Development of a facial expression scale using footrot and mastitis as models of pain in sheep. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2016.01.007

Meunier B, Pradel P, Sloth K H, Cirié C, Delval E, Mialon M M, Veissier I (2017) Image analysis to refine measurements of dairy cow behaviour from a real-time location system. Biosystems Engineering doi:10.1016/j.biosystemseng.2017.08.019

Müller B R (2015) Dor em bovinos na marcação a ferro quente: expressão facial, outros indicadores comportamentais e fisiológicos e a percepção dos produtores. Dissertation, Universidade Federal do Paraná.

Norton T, Berckmans D (2017) Developing precision livestock farming tools for precision dairy farming. Animal Frontiers. doi:10.2527/af.2017.0104

Oliveira D De, Keeling L J (2018) Routine activities and emotion in the life of dairy cows : Integrating body language into an affective state framework. Plos One. doi:10.17605/OSF.IO/9JVR6

Paul E S, Harding E J, Mendl M (2005) Measuring emotional processes in animals: The utility of a cognitive approach. Neuroscience & Biobehavioral Reviews. Rev. doi:10.1016/j.neubiorev.2005.01.002

Paul E S, Mendl M T (2018) Animal emotion: Descriptive and prescriptive definitions and their implications for a comparative perspective. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2018.01.008

Proctor H (2012) Animal sentience: Where are we and where are we heading? Animals. doi:10.3390/ani2040628

Proctor H S, Carder G (2015) Measuring positive emotions in cows: Do visible eye whites tell us anything? Physiology & Behaviour. doi:10.1016/j.physbeh.2015.04.011

Proctor H S, Carder G (2014) Can ear postures reliably measure the positive emotional state of cows? Applied Animal Behaviour Science. doi:10.1016/j.applanim.2014.09.015

Quaranta A, Siniscalchi M, Vallortigara G (2007) Asymmetric tail-wagging responses by dogs to different emotive stimuli. Current Biology. doi:10.1016/j.cub.2007.02.008

Reefmann N, Bütikofer Kaszàs F, Wechsler B, Gygax L (2009a) Ear and tail postures as indicators of emotional valence in sheep. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2009.02.013

Reefmann N, Wechsler B, Gygax L (2009b) Behavioural and physiological assessment of positive and negative emotion in sheep. Animal Behaviour. doi:10.1016/j.anbehav.2009.06.015

Reimert I, Bolhuis J E, Kemp B, Rodenburg TB (2013) Indicators of positive and negative emotions and emotional contagion in pigs. Physiology & Behaviour. doi:10.1016/j.physbeh.2012.11.002

Reimert I, Fong S, Rodenburg T B, Bolhuis J E (2017) Emotional states and emotional contagion in pigs after exposure to a positive and negative treatment. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2017.03.009

Sandem A I, Braastad B O (2005) Effects of cow-calf separation on visible eye white and behaviour in dairy cows - A brief report. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2005.04.011

Sandem A I, Braastad B O, Bakken M (2006) Behaviour and percentage eye-white in cows waiting to be fed concentrate-A brief report. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2005.08.003

Sandem A I, Braastad B O, Bøe K E (2002) Eye white may indicate emotional state on a frustration-contentedness axis in dairy cows. Applied Animal Behaviour Science. doi:10.1016/S0168-1591(02)00029-1

Sandem A I, Janczak A M, Braastad B O (2004) A short note on effects of exposure to a novel stimulus (umbrella) on behaviour and percentage of eye-white in cows. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2004.06.011

Siniscalch M, Lusito R, Vallortigara G, Quaranta A (2013) Seeing left- or right-asymmetric tail wagging produces different emotional responses in dogs. Current Biology. doi:10.1016/j.cub.2013.09.027

Stellato A C, Flint H E, Widowski T M, Serpell J A, 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. doi:10.1016/j.applanim.2016.12.007

Tamioso P R, Maiolino Molento C F, Boivin X, Chandèze H, Andanson S, Delval É, Hazard D, da Silva G P, Taconeli C A, Boissy A (2018) Inducing positive emotions: Behavioural and cardiac responses to human and brushing in ewes selected for high vs low social reactivity. Applied Animal Behaviour Science. doi:10.1016/j.applanim.2018.08.001

Tate A J, Fischer H, Leigh A E, Kendrick K M (2006) Behavioural and neurophysiological evidence for face identity and face emotion processing in animals. Philosophical Transactions of the Royal Society. doi:10.1098/rstb.2006.1937

Van Hertem T, Rooijakkers L, Berckmans D, Peña Fernández A, Norton T, Berckmans D, Vranken E (2017)                                                                                                                                              Appropriate data visualisation is key to Precision Livestock Farming acceptance. Computers and Electronics in Agriculture. doi:10.1016/j.compag.2017.04.003

Wallgren T, Larsen A, Gunnarsson S (2019) Tail Posture as an Indicator of Tail Biting in Undocked Finishing Pigs. Animals. doi:10.3390/ani9010018

Wemelsfelder F, Hunter T E A, Mendl M T, Lawrence A B (2001) Assessing the “whole animal”: A free choice profiling approach. Animal Behaviour. doi:10.1006/anbe.2001.1741