The Russian Ratsnake (Elaphe schrenckii) is a species native to Northeast Asia, with a distribution spanning China, Korea, Mongolia, and Russia. Despite its common name, "Russian rat snake," its presence in Russia is limited to the easternmost regions, including parts of the Amur region. This species is more commonly found in northeastern China, particularly in the provinces of Jilin, Heilongjiang, and the Quingyuan area of Liaoning. The Russian Ratsnake prefers a range of habitats including forested areas, grasslands, and sometimes rocky outcrops, reflecting its adaptability to diverse environments.

An interesting aspect of the Russian Ratsnake is its remarkable ability to thrive in a variety of climatic conditions. In its native range, it experiences significant temperature fluctuations between seasons, from cold winters to hot summers. This adaptability is supported by its semi-arboreal and terrestrial lifestyle, which allows it to utilize different microhabitats effectively. The Russian Ratsnake's diet predominantly consists of small mammals and birds, but it will also consume amphibians and reptiles. Its ability to manage diverse environmental conditions and dietary options highlights its resilience and ecological versatility.