Discipline: Ethology

Do Insects Feel Pain? How Insect Nervous Systems Reveal Hidden Suffering

Renz Soliman

Published in 2026

Summary of recent research showing that some insects have neural mechanisms that enable them to experience pain, including chronic pain. These findings call into question their treatment in research, farming and wider pest control.

Document Types: Scientific review

Animal categories: Invertebrates

Go to document

Behavior recognition of tail and ear biting in pigs using AI-based computer vision

Qinghua Guo, Clémence A.E.M. Orsini, Patrick P.J.H. Langenhuizen, Yue Sun, Shoujun Huo, Lisette E. van der Zande, Inonge Reimert, J. Elizabeth Bolhuis, Piter Bijma, Peter H.N. de With

Published in 2026

Study demonstrating the feasibility of video-based automated monitoring of tail and ear biting on commercial farms. A computer vision-based model (MViTv2-S) achieves approximately 72% accuracy without having to rely on detection of specific postures, paving the way for early-warning systems and breeding selection strategies to reduce these harmful behaviors.

Document Types: Scientific paper

Animal categories: Porcines

Go to document

Do pigs like to brush? An observational study of pig brushing behavior in a commercial production environment

Niclas Högberg, Lena Skånberg, Oleksiy Guzhva, Rebecka Westin, Axel Sannö, Anna Wallenbeck, Maria Vilain Rørvang

Published in 2025

First study to describe the brushing behavior of pregnant sows. The results show that they voluntarily use a mechanical brush, suggesting that this equipment may be an appropriate form of enrichment for the welfare of pigs on farm.

Document Types: Scientific paper

Animal categories: Porcines

Go to document

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

Go to document

How do domestic chickens perceive humans—and why does it matter?

Ferreira, V. H. B., Lansade, L., Calandreau, L.

Published in 2025

Scientific review showing that chickens have developed socio-cognitive capabilities that enable them to perceive human attentional states, distinguish between individual humans, and interpret human social cues, with direct implications for their welfare and farming practices.

Document Types: Scientific review

Animal categories: Poultry

Go to document

Play in Fattening Pigs: Prevalence and Potential as an Indicator of Positive Welfare

Puttkammer N., Czycholl I.

Published in 2025

Scientific study showing that play behaviors increase in pigs at the end of the fattening period, but that certain types of play, particularly play with objects, are difficult to interpret, leading to the recommendation that locomotor play should be considered a more reliable and usable welfare indicator.

Document Types: Scientific paper

Animal categories: Porcines

Go to document

Foie gras – A delicacy at the cost of suffering

Sophie Hild and Nikita Bachelard (2nd edition) based on J.-C. Nouët and T. Auffret Van Der Kemp (1st edition, 2006)

Published in 2019

Report condemning the production of foie gras based on force-feeding. Despite its commercial success and cultural roots in France, this practice is scientifically recognized as a source of illness and significant suffering, has no natural biological grounds, and is banned in several countries.

Document types: Technical Paper

Animal categories: Poultry

Go to document

Review of the evidence of sentience in cephalopod mollusks and decapod crustaceans

Jonathan Birch, Heather Browning, Charlotte Burn, Alexandra K. Schnell, Andrew Crump

Published in 2021

Scientific report describing the cognitive and emotional abilities of invertebrates (insects, cephalopod molluscs, decapod crustaceans, etc.)

Document Types: Scientific review

Animal categories: Invertebrates

Go to document

Welfare Indicators for Aquaculture Research: Toolkits for Five Farmed European Fish Species

Chris Noble, Wout Abbink, René Alvestad, László Ardó, Marie-Laure Bégout, Nina Bloecher, Erik Burgerhout, Josep Calduch-Giner, Mauro Chivite-Alcalde, Petr Císař, Evan Durland, Åsa M. Espmark, Lynne Falconer, Martin Føre, Dimitra G. Georgopoulou, Karsten Heia, Gaute A. N. Helberg, David Izquierdo Gomez, Lill-Heidi Johansen, Gunhild Seljehaug Johansson, Kristbjörg Edda Jónsdóttir, Jelena Kolarevic, Aleksei Krasnov, Santhosh K. Kumaran, Bjarne Kvæstad, Thomas Larsson, Carlo C. Lazado, Angelico Madaro, Federico Moroni, Ingrid Måge, Jonatan Nilsson, Samuel Ortega, Nikos Papandroulakis, Jaume Pérez-Sánchez, Pamela M. Prentice, Sonia Rey Planellas, Bjørn Roth, Adrian Smith, Lars Erik Solberg, Orestis Stavrakidis-Zachou, Lars Helge Stien, Anja Striberny, Ragnhild Aven Svalheim, Bjørn-Steinar Sæther, Gerrit Timmerhaus, Hilde Toften, Linda Tschirren, Hans van de Vis, Elisabeth Ytteborg, Lucas A. Zena, Tone-Kari Knutsdatter Østbye

Published in 2026

Scientific summary highlighting the need to improve and harmonize fish welfare indicators in aquaculture research, taking into account species and life stages, in order to ensure animal protection, scientific quality, reliable results and reproducibility. The authors propose updated toolboxes of welfare indicators for five major species, incorporating euthanasia, sampling, data digitization, and European regulatory requirements into their review.

Document Types: Scientific review

Animal categories: Fish

Go to document

Welfare and productivity in Muscovy ducks: Impact of swimming pond availability

Lukáš Zita, Ondřej Krunt, Jitka Edrová, Jakub Vorel, Eva Chmelíková, Antonella Dalle Zotte

Published in 2025

Scientific article showing that access to a pond significantly improves hygiene, health, and natural behaviors in Muscovy ducks, while also promoting growth and carcass quality that is at least equivalent, if not superior.

Document Types: Scientific paper

Animal categories: Poultry

Go to document