What are Mustelids?

Global range of mustelids

Most of us know what otters and badgers are, but as for martens, minks, grisons, polecats, the tayra and wolverine… Why are there so many different names for a weasel? That’s because many of them are actually different species; some of which aren’t really weasels at all.

A brief history

Mustelidae is the largest family within the order Carnivora and also one of the most successful, with distribution on all continents except the poles and Australia. They’re also among the most primitive, having been around for some 15 million years and undergone few anatomical changes from the first carnivorans that appeared about 40 million years ago. This does not by any means indicate they underdeveloped- on the contrary, through adapting to niches in a vast variety of environments the mustelids  have taken on an equally wide range of forms, while still having kept parts of the original design. Studying mustelids and how they function offers a rare glimpse into ancient times and evolution in effect.

Clever, feisty and incredibly diverse

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More than just predators

We often hear about mustelids like polecats, martens, weasels and the American mink being super predators, but where is the attention to them also being super mothers? These animals will go above and beyond to provide for their young; boldly and tirelessly risking their lives for the many mouths that depend on them for nourishment. Not only that, but they also must pass down their experience to their young, so they too will have the skills needed to survive.

Many of the smaller mustelids themselves are prey to a number of larger predators, such as owls, wolves, foxes and eagles.


American Mink | Badgers | Ferret-Badgers | Fisher | Grisons | Martens | Otters | PolecatsTayra | Weasels | Wolverine