The term "weasel" often refers to a small, carnivorous mammal belonging to the family Mustelidae. These animals are known for their slender bodies, short legs, and sharp teeth. Weasels are agile hunters, primarily preying on rodents and other small animals. They are found in various habitats, including forests, grasslands, and even urban areas. In a figurative sense, "sly as a weasel" describes someone who is cunning or deceitful. This expression highlights the weasel's reputation for being sneaky and clever in avoiding danger. Such traits can be seen in various contexts, including literature and popular culture, where characters embody these characteristics, often leading to unexpected outcomes.