Weasel: Mustela nivalis
- Photograph and notes on this species, its habits, reproduction and diet.
- http://www.bbc.co.uk/nature/wildfacts/factfiles/202.shtml

Mustelids
- Information on the badgers and skunks of the Sonoran Desert including their distinguishing features, habitat, feeding and life history.
- http://www.desertmuseum.org/books/nhsd_mustelids.php

Stoat: Mustela erminea
- Factsheet on this species, its habits and its interactions with man.
- http://www.yptenc.org.uk/docs/factsheets/animal_facts/stoat.html

Polecat: Mustela putorius
- Factsheet on this species, its habits and its interactions with man.
- http://www.yptenc.org.uk/docs/factsheets/animal_facts/pole_cat.html

Pine Marten
- Factsheet on Martes martes, its habits and the protection it needs.
- http://www.yptenc.org.uk/docs/factsheets/animal_facts/pinemarten.html

Mustelidae
- Articles and links for many different species from Suite101.
- http://www.suite101.com/welcome.cfm/mustelidae/

Wolverine Foundation
- Information about the status and ecological role of the Wolverine (Gulo gulo).
- http://www.wolverinefoundation.org/