Mink farming involves keeping highly active, semi-aquatic predators in small wire cages. The welfare case against mink farming has contributed to bans across much of Europe.
Mink are semi-aquatic carnivores that in the wild swim, hunt, and patrol territories of several kilometres. Standard farm cages prevent all natural behaviour — mink cannot swim, hunt, or range. The resulting chronic frustration produces stereotypic behaviour in the vast majority of farmed mink, with research showing over 90% of farm mink exhibit repetitive behaviours indicating persistent negative welfare states. Wire floors cause paw injuries. Social isolation (mink are housed individually or in pairs) prevents natural social behaviour. COVID-19 culls — conducted by gassing millions of animals — occurred without time for humane killing infrastructure, resulting in welfare failures in some facilities.