North America:
* Long-tailed weasel: Throughout Canada and the United States, except for the southwestern desert regions
* Short-tailed weasel: Throughout Canada and the northern United States, as well as some parts of Alaska
Europe:
* European weasel: Most of Europe, excluding Ireland, Iceland, and the northernmost regions of Scandinavia
* Least weasel: Central and Southern Europe
* Stoat: Throughout Europe, excluding the Mediterranean islands and the southernmost parts of the Iberian Peninsula
Asia:
* Siberian weasel: Siberia and Mongolia
* Chinese weasel: China and parts of Southeast Asia
* Long-tailed weasel: Parts of Asia, including China, Russia, and Mongolia
Africa:
* African weasel: Parts of Africa, including North Africa, East Africa, and Southern Africa
Note: Some species, like the long-tailed weasel, have very wide ranges and may overlap in their distribution.
Overall, weasels are found in a variety of habitats, from forests and grasslands to mountains and deserts. They are adaptable animals and can thrive in different environments.