Animal welfare as a scientific discipline has a surprisingly recent history. Understanding how the field developed illuminates why welfare standards vary so much across species and contexts.
Animal welfare science is a young discipline that emerged from the intersection of ethology, veterinary medicine, and moral philosophy. The Five Freedoms framework — developed in response to factory farming exposures in the 1960s — provided a practical structure that has shaped regulation and certification for 60 years. The Five Domains model extended this to include positive welfare. Current research frontiers include cognitive bias testing, positive affect measurement, and welfare biology for wild animals. The field's youth explains why knowledge and regulation are so uneven across species.