The Longtail Weasel, also known as the Big Stoat or Mustela Longicauda, is a small, carnivorous mammal that belongs to the weasel family. These animals are commonly found in North America and Eurasia, where they inhabit a variety of habitats ranging from forests to grasslands. The Longtail Weasel has a slender body and long tail, and it is often mistaken for a small ferret due to its similar appearance. Other popular synonyms for the Longtail Weasel include the Ermine, Short-tailed Weasel, Bridled Weasel, and Yellow-bellied Weasel. Despite its small size, the Longtail Weasel is a skilled predator that feeds on small rodents, birds, and insects.