The Siberian weasel (Mustela sibirica) is a small carnivorous mammal found primarily in Siberia, Mongolia, and parts of China. It has a slender body, short legs, and a bushy tail, typically measuring about 30 to 50 centimeters in length. Its fur is soft and can vary in color from light brown to dark brown, often with a lighter underbelly. This weasel is known for its agility and hunting skills, preying on small animals such as rodents and birds. It prefers habitats like forests, grasslands, and mountainous regions, where it can easily find shelter and food. The Siberian weasel is also an important part of its ecosystem, helping to control the population of its prey.