Subject: Emotion

Animal Board Invited Review: Intrinsic hedonic value, complexity, and possibility for action as essential characteristics of a welfare-friendly environment for animals

I. Veissier, C. Terlouw, R. Botreau, V. Deiss, S. Cowie

Published in 2026

Study examining how the hedonic value of the environment determines animal welfare. Welfare depends on a balance between positive emotions, environmental complexity and opportunities for behavioral expression: these factors must be optimized (rather than maximized), since an excess or a deficiency of any one of them can be harmful to welfare, with the optimal level varying by individual.

Document Types: Scientific review

Animal categories: Bovines, Caprines, Equines, Ovines, Porcines, Poultry

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Behavioral indicators of positive welfare in broilers

Jenna Boewe, Marisa Erasmus

Published in 2026

The welfare of broiler chickens now includes positive states and the expression of natural behaviors, which are assessed using behavioral indicators and promoted through environmental enrichment.

Document Types: Scientific paper

Animal categories: Poultry

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Applying the five domains to the welfare of farmed black soldier flies, house flies, and yellow mealworms

Samuel Olutunde Durosaro, Meghan Barrett

Published in 2025

A study examining the current state of knowledge regarding the welfare of three insects raised for human and animal consumption (black soldier flies, houseflies, and yellow mealworms) based on the five-domain framework (nutrition, physical health, environment, behavior, and mental state).

Document Types: Scientific review

Animal categories: Invertebrates

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The Influence of Environmental Conditions and Husbandry Practices on Goat Welfare

Pilarczyk R., Bąkowska M., Tomza-Marciniak A., Udała J., Seremak B., Kwita E., Sablik P., Pilarczyk B.

Published in 2026

Study showing that goat welfare depends strongly on the environment, diet, and social interactions. Appropriate farming practices (stress management, enrichment, and supervised pain management) and regular assessments significantly improve their welfare, but further research is needed.

Document Types: Scientific review

Animal categories: Caprines

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Bien-être et comportement des poules domestiques

Cécile Arnould

Published in 2026

Book detailing the sensory, social, emotional, and cognitive abilities of domestic chickens in order to improve recognition of their sensitivities and the importance of their welfare, drawing on scientific advances, changes in legislation, and the author's experience.

Document Types: Scientific work

Animal categories: Poultry

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Fowl play: Do age and aviary design affect play in cage-free laying hens?

Xiaowen Ma, Vrinda Ambike, Valentina Bongiorno, Jacquelyn A. Jacobs, Janice C. Swanson, Tina M. Widowski, Janice M. Siegford

Published in 2026

Study showing that the play behavior of laying hens decreases significantly with age, and is influenced by aviary design and space allocation per bird. Certain activities, such as more frequent running or wing flapping, were influenced by aviary design and space per bird. The study concludes that housing configuration influences welfare and may interact with the hens' developmental stage.

Document types: Scientific documents

Animal categories: Poultry

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The Influence of Environmental and Genetic Factors and Training Background on the Welfare of Herding Dogs

B. Pilarczyk; R. Pilarczyk; M. Bąkowska; A. Tomza-Marciniak; E. Kwita; J. Udała

Published in 2026

Bibliographic review concluding that the effectiveness and well-being of sheepdogs depend on genetic factors, living conditions, and, above all, training methods based on positive reinforcement and a relationship of trust.

Document types: Scientific documents

Animal categories:Canine

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Aggressive behaviors in rabbits. A review

Zsolt Szendrő

Published in 2026

Scientific literature review on aggressive behavior in farmed rabbits at different stages of the production cycle and measures to reduce it. The author highlights the particular problem posed by the group housing of females in commercial farming, a practice that leads to aggression and chronic stress.

Document types: Scientific documents

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Cognition of dairy cattle: Implications for animal welfare and dairy science

Kathryn L. Proudfoot, Thomas Ede, Catherine L. Ryan, Heather W. Neave

Published in 2025

Review of current knowledge on cognitive processes in dairy cows and how they are linked to farming practices and welfare. It identifies major gaps and priorities to guide future research.

Document Types: Scientific paper

Animal categories: Bovines

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Human emotional odors influence horses' behavior and physiology

Plotine Jardat, Alexandra Destrez, Fabrice Damon, Noa Tanguy-Guillo, Anne-Lyse Lainé, Céline Parias, Fabrice Reigner, Vitor H. B. Ferreira, Ludovic Calandreau, Léa Lansade

Published in 2026

Scientific study showing that human odors associated with fear produce heightened fear responses in horses and reduced interactions with humans. These results show the key role of olfactory signals in interspecies emotional communication between humans and horses..

Document Types: Scientific paper

Animal categories: Equines

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