Long-tailed Weasels are voracious predators, foraging day and night for small vertebrates, and scavenging for carrion when necessary. In captivity, adults can consume an amount equal to one-third their own body weight in 24 hours. Learn more about the Mustela frenata, more commonly known as a Long-tailed Weasel, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.