The mink is a semi-aquatic mammal belonging to the weasel family, Mustelidae. These adaptable carnivores are found across various parts of North America, Europe, and Asia, often living near water sources like rivers, lakes, and marshes. They are recognized for their agility both on land and in water, making them effective hunters of a diverse range of prey. Minks are generally solitary animals, except during their breeding season.
General Body Structure and Size
Minks have a long, slender body that allows them to navigate through tight spaces and burrows. This streamlined shape also helps reduce water resistance when they are swimming. They have relatively short legs and a thick neck.
Mink exhibit sexual dimorphism; males are larger than females. Wild male minks measure between 19 to 29 inches (48-74 cm) in total length and can weigh from 1.4 to 2.3 kg (3 to almost 5 pounds). Females are smaller, reaching around 18 to 22 inches (46-56 cm) in length and weighing about 0.5 to 0.8 kg (1 to 1.7 pounds). Farm-bred minks can be even larger due to selective breeding and enhanced nutrition.
The Distinctive Mink Fur
The mink’s fur is a recognizable feature, valued for its appearance and texture. In the wild, their coat is a dark chocolate-brown, often appearing almost black, particularly when wet. The fur has a glossy sheen and a dense, soft texture.
This pelage is composed of two layers: a thick, wavy underfur and longer, slick guard hairs. This two-layer system provides insulation and helps to waterproof the animal, an adaptation for their semi-aquatic lifestyle. Most minks also feature a distinct white patch on their chin or lower lip, and some may have additional irregular white spots on their throat, chest, or belly.
Key Anatomical Details
A mink’s head is broad, flattened, and has a pointed muzzle. They have small, rounded ears that sit close to their head and beady black eyes. Their whiskers, while present, are not prominently visible.
The tail is bushy and tapers towards the end, constituting about one-third to one-fourth of their total body length. The fur on the tail can sometimes be darker than the body fur, often tipped with black. Their feet have five digits on each paw and are semi-webbed, which aids in their swimming ability.