Mammals
American Mink
Neovison vison · also called American minks
Along the edge of a quiet stream, an American mink slips beneath the surface without a splash, chasing a fish through the current with the same ease it uses to hunt frogs and small mammals along the muddy bank just moments later.
Overview
The American mink, Neovison vison, is a semi-aquatic carnivore native to wetland and forested waterway habitat across most of North America. Its skilled swimming ability, solitary territorial nature, and significant history as both a fur trade animal and a disruptive invasive species in Europe make it one of the more consequential mustelids found on the continent.
A hunter equally at home in water and on land
Few North American predators move as fluidly between water and land as the American mink, whose partially webbed feet let it chase prey beneath the surface one moment and along the muddy bank the next.
Status
Least Concern and widespread across suitable wetland and waterway habitat throughout most of North America, though its introduction to Europe through the fur trade has made it a significant invasive threat to native wildlife there.
American Mink: common questions
Why is the American mink considered a problem in Europe?
Escaped and released American mink from fur farms have established wild populations across parts of Europe, where they compete directly with the native European mink for the same resources and have contributed significantly to declines in the native species, making the American mink one of the more disruptive invasive carnivores on that continent.
How does the American mink hunt both on land and in water?
This species has partially webbed feet and swims and dives well, allowing it to pursue fish, crayfish, and frogs underwater as effectively as it hunts small mammals and birds along the banks of the streams, ponds, and marshes that make up its habitat.
Why was the American mink historically trapped and farmed so heavily?
This species was prized for its dense, soft fur, which made it a major target of both wild trapping and commercial fur farming throughout the twentieth century, a trade that ultimately led to its introduction well beyond its native North American range through farm escapes and deliberate releases.
Is the American mink active during the day or at night?
This species can be active at various times depending on prey availability and season, rather than following a strictly nocturnal or diurnal pattern, giving it flexibility in when it hunts along its waterway territory.