Mustela felipeiIzor and de la Torre, 1978, is a mustelid commonly called the Colombian or Don Felipe's weasel and is South America's smallest weasel. It is also the darkest weasel in South America, with little variation in dorsal coloration; the venter is cream-colored with an oval spot the same color as the dorsum. The species is endemic to the Andes. Known from 6 specimens and 5 localities in Colombia and Ecuador, it may be the rarest carnivore in South America. Globally, it is considered “Vulnerable” by the International Union for Conservation of Nature and Natural Resources, although in Colombia it is considered “Endangered.”