Emotion, Pain, & Sentience

The effects of cage color and light intensity on rat affect during heterospecific play

Environmental enrichment provides physiological and emotional benefits to laboratory rodents. Red tinted shelters are a common enrichment found in laboratories that provide rodents with a hiding space shielded from bright light. Red tinting alters the light's spectral make-up which reduces...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Environmental Enrichment, Housing, Husbandry & ManagementAnimal Type: Rat, Rodent

Citation: LaFollette, M. R., Swan, M. P., Smith, R. K. et al. 2019. The effects of cage color and light intensity on rat affect during heterospecific play. Applied Animal Behaviour Science 219, 104834.

Only when it feels good: Specific cat vocalizations other than meowing

Our objective was to identify and characterize the types of vocalization other than meowing (VOM) in two contexts, a pleasant and an aversive situation, and to study the effect of the sex of the animal. A total of 74 cats...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Vocalization, Welfare AssessmentAnimal Type: Cat

Citation: Fermo, J. L., Schnaider, M. A., Silva, A. H. P. et al. 2019. Only when it feels good: Specific cat vocalizations other than meowing. Animals 9(11), 878.

Given the cold shoulder: A review of the scientific literature for evidence of reptile sentience

We searched a selection of the scientific literature to document evidence for, and explorations into reptile sentience. The intention of this review was to highlight; (1) to what extent reptile capability for emotions have been documented in the scientific literature;...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Husbandry & ManagementAnimal Type: Crocodile & Alligator, Lizard, Reptile, Snake, Turtle & Tortoise

Citation: Lambert, H., Carder, G., D'Cruze, N. 2019. Given the cold shoulder: A review of the scientific literature for evidence of reptile sentience. Animals 9(10), 821.

Are tail and ear movements indicators of emotions in tail-docked pigs in response to environmental enrichment?

The inclusion of emotional indicators in farm monitoring methods can improve welfare assessments. Studies in controlled conditions have suggested that increased tail movement is an indicator of positive emotions in pigs, while others have proposed that increased ear movements are...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Pig

Citation: Marcet-Rius, M., Fàbrega, E., Cozzi, A. et al. 2019. Are tail and ear movements indicators of emotions in tail-docked pigs in response to environmental enrichment? Animals 9(7), 449.

Understanding cows’ emotions on farm: Are eye white and ear posture reliable indicators?

Understanding the emotions of dairy cows is primarily important in enhancing the level of welfare and provide a better life on farm. This study explored whether eye white and ear posture can reliably contribute to interpret valence and arousal of...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Cattle

Citation: Battini, M., Agostini, A., Mattiello, S. 2019. Understanding cows' emotions on farm: Are eye white and ear posture reliable indicators? Animals 9(8), 477.

Fear contagion in zebrafish: A behaviour affected by familiarity

Emotional contagion has recently been described in fish but whether it is affected by familiarity is not known. We tested whether the sight of a distressed conspecific elicited fear in zebrafish, Danio rerio, and whether this was modulated by familiarity....

Year Published: 2019Topics: Emotion, Pain, & Sentience, Husbandry & ManagementAnimal Type: Fish, Zebrafish

Citation: Silva, P. F., de Leaniz, C. G., Luchiari, A. C. 2019. Fear contagion in zebrafish: A behaviour affected by familiarity. Animal Behaviour 153, 95-103.

Positive welfare for fishes: Rationale and areas for future study

Traditional animal welfare paradigms have focused on maintaining physical health and mitigating negative impacts to wellbeing. Recently, however, the field has increasingly recognized the importance of positive welfare (i.e., mental and physical states that exceed what is necessary for immediate...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Fish, Other Fish, Salmon, Tilapia, Trout, Zebrafish

Citation: Fife-Cook, I., Franks, B. 2019. Positive welfare for fishes: Rationale and areas for future study. Fishes 4(2), 31.

Exercise reward induces appetitive 50-kHz calls in rats

Rats express affective states by visible behaviors (like approach or flight) and through different kinds of ultrasonic vocalizations (USV). 50-kHz calls are thought to reflect positive affective states since they occur during rewarding situations like social play or palatable food....

Year Published: 2015Topics: Emotion, Pain, & Sentience, Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Heyse, N. C., Brenes, J. C., Schwarting, R. K. W. 2015. Exercise reward induces appetitive 50-kHz calls in rats. Physiology & Behavior 147, 131-140.

Attenuation of fear through social transmission in groups of same and differently aged horses

Transmission of fear and attenuation of fear within groups of farm animals remain relatively unexplored, despite the importance for human and animal safety. This paper reports the results of two separate experiments, aiming to explore social transmission of habituation in...

Year Published: 2018Topics: Emotion, Pain, & Sentience, Social Housing & CompanionshipAnimal Type: Equine

Citation: Rørvang, M. V., Christensen, J. W. 2018. Attenuation of fear through social transmission in groups of same and differently aged horses. Applied Animal Behaviour Science 209, 41-46.

Examining affective structure in chickens: valence, intensity, persistence and generalization measured using a Conditioned Place Preference Test

When measuring animals' valenced behavioural responses to stimuli, the Conditioned Place Preference (CPP) test goes a step further than many approach-based and avoidance-based tests by establishing whether a learned preference for, or aversion to, the location in which the stimulus...

Year Published: 2018Topics: Emotion, Pain, & SentienceAnimal Type: Bird, Chicken

Citation: Paul, E. S., Edgar, J. L., Caplen, G. et al. 2018. Examining affective structure in chickens: valence, intensity, persistence and generalization measured using a Conditioned Place Preference Test. Applied Animal Behaviour Science 207, 39-48.