# American Mink (*Neogale vison*)

> The American mink (Neogale vison) is a sleek, semi-aquatic member of the weasel family, native to North America and widely introduced across Europe and Asia. About 60 cm long including the tail and weighing up to 1.6 kg, it has dark, water-repellent fur and hunts fish, birds, and small mammals along rivers and lakesides. An agile swimmer and climber, it lives up to ten years in the wild.

- **Category:** Mammal
- **Conservation status (IUCN):** Least Concern
- **Range:** Native to North America from Alaska through Canada and the US; invasive in Europe, Iceland, South America, and parts of Asia from fur-farm escapes.
- **Canonical page:** https://globalanimalguide.org/animals/mink/
- **Last reviewed:** 2026-07-16

## Scientific classification

- **Kingdom:** Animalia
- **Phylum:** Chordata
- **Class:** Mammalia
- **Order:** Carnivora
- **Family:** Mustelidae
- **Genus:** Neogale

## Facts at a glance

| Attribute | Value |
| --- | --- |
| Scientific name | Neogale vison |
| Diet | Carnivore — fish, birds, rodents, and amphibians |
| Habitat | Rivers, lakes, marshes, and coastlines |
| Lifespan | 3–10 years in the wild (longer in captivity) |
| Weight | 0.6–1.6 kg (1.3–3.5 lb); males larger than females |
| Top speed | Up to 25 km/h (16 mph) on land; strong swimmer |
| Conservation status | Least Concern (IUCN) |

## Semi-aquatic hunting

The American mink is equally at home in water and on land, hunting fish, frogs, and crayfish beneath the surface and rodents, rabbits, and birds along the bank. It swims strongly and can dive to catch prey, using partially webbed feet and a streamlined body. On land it moves in a bounding gait at up to 25 km/h (16 mph) and readily climbs to reach nests. This versatility makes it one of the most effective small predators of wetland habitats.

## Fur and body

Mink are prized for their dense, glossy, water-repellent fur, which ranges from rich chocolate brown to nearly black, usually with a small white patch on the chin or chest. The coat traps a layer of air that keeps the animal warm and dry even in cold water. A long, low-slung body and short legs suit a life of squeezing into burrows and diving after prey. Males are noticeably larger and heavier than females.

## Territory and behaviour

American mink are solitary and territorial, marking the banks of their home range with a strong-smelling secretion from scent glands. Each individual patrols a stretch of waterway, often using several dens among tree roots, rocks, or abandoned burrows. They are active mainly at dawn and dusk and largely avoid one another except to breed. Females hold smaller territories that may overlap with a larger male's range.

## Breeding and kits

Mink breed in late winter and early spring, and after a variable gestation the female gives birth to a litter of around four to six kits in a sheltered den. The young are born blind and helpless and are cared for solely by the mother. They are weaned at roughly eight weeks and become independent by late summer, dispersing to establish territories of their own. Most are ready to breed by the following year.

## An invasive species in Europe

Although native to North America, the American mink has spread widely across Europe and parts of Asia after escaping and being released from fur farms. In these regions it is a damaging invasive species, preying heavily on ground-nesting birds, water voles, and other native wildlife that lack defences against it. In Britain it has been a major factor in the decline of the water vole. Control programmes now aim to protect vulnerable native species from its impact.

## Distribution and status

In its native North America the American mink is common and widespread along rivers, lakes, marshes, and coastlines, and the IUCN lists it as Least Concern. It tolerates a wide range of wetland habitats and is not threatened across its natural range. Wild mink live three to ten years, with survival often limited by harsh winters and larger predators. Its adaptability is exactly what makes it such a successful colonist elsewhere.

## Frequently asked questions

### Is the American mink the same as the European mink?

No, they are different species. The American mink (Neogale vison) is larger and now widespread in Europe as an invasive animal, while the native European mink is a separate, rarer species that has declined sharply, partly due to competition from its American relative.

### What do American mink eat?

American mink are carnivores that hunt fish, frogs, and crayfish in the water and rodents, rabbits, and birds on land. Their varied diet and willingness to hunt both in and out of water make them highly effective predators.

### Can mink swim?

Yes, mink are excellent swimmers and divers, with partly webbed feet and water-repellent fur. They regularly hunt underwater prey such as fish and crayfish.

### Why are American mink a problem in Britain?

American mink escaped and were released from fur farms and have since spread across Britain, where they are an invasive species. They prey heavily on native wildlife such as water voles and ground-nesting birds, contributing to serious declines.

### How long do American mink live?

In the wild, American mink typically live three to ten years, though many die younger. Captive animals tend to live longer thanks to steady food and shelter.

### How big is an American mink?

Including the tail, an American mink is about 60 cm long and weighs between 0.6 and 1.6 kg (1.3 to 3.5 lb). Males are considerably larger than females.

## Sources

- [IUCN Red List — Neogale vison.](https://www.iucnredlist.org/search?query=Neogale%20vison&searchType=species)
- [Animal Diversity Web — Neogale vison. University of Michigan Museum of Zoology.](https://animaldiversity.org/accounts/Neogale_vison/)

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Source: Global Animal Guide (https://globalanimalguide.org/animals/mink/). Licensed CC BY-NC 4.0 — free for non-commercial reuse with attribution.