Beerda B, Schilder BH, Van Hooff JARAM, DeVries HW, Mol JA (1999) Chronic stress in dogs subjected to social and spatial restriction. I. Behavioral responses. Physiol Behav 66:233–242
Bethus I, Tse D, Morris RG (2010) Dopamine and memory: modulation of the persistence of memory for novel hippocampal NMDA receptor-dependent paired associates. J Neurosci 30:1610–1618
Blackwell E-J, Bodnariu A, Tyson J, Bradshaw JWS, Casey RA (2010) Rapid shaping of behaviour associated with high urinary cortisol in domestic dogs. Appl Anim Behav Sci 124:113–120
Boissy A, Arnould C, Chaillou E, Désiré L, Duvaux-Ponter C, Greiveldinger L, Leterrier C, Richard S, Roussel S, Saint-Dizier H, Meunier-Salaün MC, Valance D, Veissier I (2007) Emotions and cognition: a new approach to animal welfare. Anim Welf 16:37–43
Broom DM (1988) The scientific assessment of animal welfare. Appl Anim Behav Sci 20:5–19
Broom DM (2010) Cognitive ability and awareness in domestic animals and decisions about obligations to animals. Appl Anim Behav Sci 126:1–11
Burman OHP, Parker RMA, Paul ES, Mendl M (2008) Sensitivity to reward loss as an indicator of animal emotion and welfare. Biol Lett 4:330–333
Burman O, McGowan R, Mendl M, Norling Y, Paul E, Rehn T, Keeling L (2011) Using judgement bias to measure positive affective states in dogs. Appl Anim Behav Sci 132:160–168
Buttelmann D, Tomasello M (2012) Can domestic dogs (Canis familiaris) use referential emotional expressions to locate hidden food? Anim Cogn. doi:10.1007/s10071-012-0560-4
Carere C, Locurto C (2011) Interaction between animal personality and animal cognition. Curr Zool 57:491–498
Chowdhury R, Guitart-Masip M, Bunzeck N, Dolan RJ, Düzel E (2012) Dopamine modulates episodic memory persistence in old age. J Neurosci 32:14193–14204
Cuenya L, Fosacheca S, Mustaca A, Kamenetzky G (2012) Effects of isolation in adulthood on frustration and anxiety. Behav Process 90:155–160
Fraser D, Duncan IJH (1998) ‘Pleasures’, ‘pains’ and animal welfare: toward a natural history of affect. Anim Welfare 7:383–396
Goddard ME, Beilharz RG (1985) Individual variation in agonistic behaviour in dogs. Anim Behav 33:1338–1342
Green TC, Mellor F (2011) Extending ideas about animal welfare assessment to include ‘quality of life’ and related concepts. N Z Vet J 59:263–271
Groothuis TGG, Carere C (2005) Avian personalities: characterization and epigenesis. Neuro Biobehav Rev 29:137–150
Gygax L, Reefmann N, Wolf M, Langbein J (2013) Prefrontal cortex activity, sympatho-vagal reaction and behaviour distinguish between situations of feed reward and frustration in dwarf goats. Behav Brain Res 239:104–114
Hagen K, Broom DM (2004) Emotional reactions to learning in cattle. Appl Anim Behav Sci 85:203–213
Harding EJ, Paul ES, Mendl M (2004) Animal behavior: cognitive bias and affective state. Nature 427:312
Horváth Z, Igyártó BZ, Magyar A, Miklósi Á (2007) Three different coping styles in police dogs exposed to a short-term challenge. Horm Behav 52:621–630
Hu H, Real E, Takamiya K, Kang M-G, Ledoux J, Huganir RL, Malinow R (2007) Emotion enhances learning via norepinephrine regulation of AMPA-receptor trafficking. Cell 131:160–173
Kalbe C, Puppe B (2010) Long-term cognitive enrichment affects opioid receptor expression in the amygdala of domestic pigs. Genes Brain Behav 9:75–83
Knowles PA, Conner RL, Panksepp J (1989) Opiate effects on social behavior of juvenile dogs as a function of social deprivation. Pharmocol Biochem Behav 33:533–537
Kupán K, Miklósi Á, Gergely G, Topál J (2011) Why do dogs (Canis familiaris) select the empty container in an observational learning task? Anim Cogn 14:259–268
Langbein J, Nürnberg G, Manteuffel G (2004) Visual discrimination learning in dwarf goats and associated changes in heart rate and heart rate variability. Physiol Behav 82:601–609
Langbein J, Siebert K, Nürnberg G (2009) On the use of an automated learning device by group-housed dwarf goats: do goats seek cognitive challenges? Appl Anim Behav Sci 120:150–158
Lit L, Schweitzer JB, Oberbauer AM (2011) Handler beliefs affect scent detection dog outcomes. Anim Cogn 14:387–394
McGowan RTS, Robbins CT, Alldredge JR, Newberry RC (2010) Contrafreeloading in grizzly bears: implications for captive foraging enrichment. Zoo Biol 29:484–502
McLeod PJ (1996) Developmental changes in associations among timber wolf (Canis lupos) postures. Behav Process 38:105–118
Meehan CL, Mench JA (2007) The challenge of challenge: can problem solving opportunities enhance animal welfare? Appl Anim Behav Sci 102:246–261
Mendl M, Burman OHP, Paul ES (2010) An integrative and functional framework for the study of animal emotion and mood. Proc R Soc B 277:2895–2904
Norling Y, Wiss V, Gorjanc G, Keeling LJ (2012) Body language of dogs responding to different types of stimuli. In: Proceedings of the 46th congress of the international society for applied ethology, July 31st–August 4th, Vienna, p 199
Panksepp J (1998) Affective neuroscience: the foundations of human and animal emotions. Oxford University Press, New York
Panksepp J (2011) The basic emotional circuits of mammalian brains: do animals have affective lives? Neurosci Biobehav Rev 35:1791–1804
Panksepp J, Conner R, Forster PK, Bishop P, Scott JP (1983) Opiod effects on social behavior of kennel dogs. J Appl Ethol 10:63–74
Paul ES, Harding EJ, Mendl M (2005) Measuring emotional processes in animals: the utility of a cognitive approach. Neurosci Biobehav Rev 29:469–491
Prescott MJ, Morton DB, Anderson D, Buckwell A, Heath S, Hubrecht R, Jennings M, Robb D, Ruane B, Swallow J, Thompson P (2004) Refining dog husbandry and care. BVAAWF/FRAME/RSPCA/UFAW joint working group on refinement. Lab Anim 38(S1):11–24
Quaranta A, Siniscalchi M, Vallortigara G (2007) Asymmetric tail-wagging response by dogs to different emotive stimuli. Curr Biol 17:199–201
Rehn T, Keeling LJ (2010) Investigating greeting behaviour in dogs reunited with a familiar person. In: Proceedings of the 44th congress of the international society for applied ethology, August 4–7, Uppsala, p 54
Rooney NJ, Bradshaw JWS, Robinson IH (2000) A comparison of dog–dog and dog-human play behaviour. Appl Anim Behav Sci 66:235–248
Sakaki M, Niki K, Mather M (2012) Beyond arousal and valence: the importance of the biological versus social relevance of emotional stimuli. Cogn Affect Behav Neurosci 12:115–139
Spruijt BM, Van den Bos R, Pijlman FTA (2001) A concept of welfare based on reward evaluating mechanisms in the brain: anticipatory behaviour as an indicator for the state of reward systems. Appl Anim Behav Sci 72:145–171
Svartberg K, Forkman B (2002) Personality traits in the domestic dog (Canis familiaris). Appl Anim Behav Sci 79:133–155
Wemelsfelder F (2007) How animals communicate quality of life: the qualitative assessment of behaviour. Anim Welf 16(S):25–31
Zebunke M, Langbein J, Manteuffel G, Puppe B (2011) Autonomic reactions indicating positive affect during acoustic reward learning in domestic pigs. Anim Behav 81:481–489