1. Assessment of positive emotions in animals to improve their welfare;Boissy;Physiol Behav,2007
2. Emotions in farm animals:: a new approach to animal welfare in applied ethology;Désiré;Behav Processes,2002
3. Mental Need for Illness in Animals—The Precision in Terminology and Diagnostic Criteria;Overall,2005
4. Pisa JP, Leme D. Suporte teórico para os diagnósticos de distúrbios mentais em cães, gatos e equinos -Revisão Bibliográfica, 2022.
5. An integrative and functional framework for the study of animal emotion and mood;Mendl;Proc R Soc B Biol Sci,2010