Decades of research on stereotypic behavior in caged mink has produced some of the strongest evidence in welfare science for the welfare cost of barren environments.
Mink stereotypy research is foundational to modern welfare science. The near-universal development of stereotypic behavior in caged mink, emerging so rapidly and responding so predictably to environmental factors, provided some of the clearest early evidence that barren cage environments cause genuine psychological harm to animals. This research contributed directly to the scientific framework that now underlies welfare assessment across farm animal species. The ongoing scale of mink farming in countries that have not yet implemented bans means this welfare emergency continues for millions of animals.