Fisher

The fisher is an intelligent, predatory species of mustelid present in the Mouse Territories.
Although closely related to the weasel and ferret, the fisher is far larger. Unlike its cousins, the fisher does not form complex societies and tends to live alone, although a few may band together during the mating season.[1]

The fisher is technologically unsophisticated. It may improvise simple clothing, tools, trinkets and weapons, but uses basic materials leading to crude results. Nonetheless, it is not wasteful and will put every piece of what it kills to good use.[1]

The fisher rarely speaks — not because it is unable, but because it wishes to remain silent while hunting prey.[1]

Sables, Minks and Martens

Close cousins to the weasel. They can often be found among the weasels acting as laborers, scouts or advisers. These intelligent species possess language, culture and technology. They are also natural enemies of mice. They will kill – and even eat – mice.

Martens are lithe, tree-dwelling creatures
Mink tactics for catching pheasants include burrowing in the ground, waiting for one to get close and then pounce and kill it

Ferret

Ferrets are a species of mammal that are allies of the weasels, and are likewise present in the mouse territories, though possibly to a lesser extent. Their dialect is similar to that of mice so the two species can communicate just fine.

Ferrets, while present in the mouse territories, seem to hail, and possibly originate, from the island of Ildur. There are also minks and a few weasels on the island as well. There the island is ruled by a king who is to lead fairly and with honor. They differ from weasels in that, whereas weasels kill mice without compunction or need, ferrets kill all their prey for the meat alone. Thus, they have had civil and honorable negotiations with adventuring mice that have visited their kingdom.

It is possible that, because of their lack of prejudice against mice, weasels may see ferrets as soft, and thus treat them like second class citizens under weasel rule.

In the culture of the Ebon Kingdom, centered on the island of Ildur, the houses resemble the halls of Norse vikings. For those who wear them, clothes include woven leather belts, gold scaled armor, and cloth. Technologically, they seem to be fairly advanced, with detailed maps and star charts, access to plentiful iron and steel, and their smiths have the skills to make crossbows, chainmail, and scale mail.