The Japanese Rat Snake, also known as Elaphe climacophora, is a non-venomous snake native to Japan and parts of East Asia. It typically grows to a length of 4 to 6 feet and is recognized for its slender body and distinctive coloration, which can range from yellow to greenish or gray, often with dark blotches. This species is primarily arboreal, meaning it spends much of its time in trees, and is known for its excellent climbing abilities. The Japanese Rat Snake primarily feeds on small mammals, birds, and eggs, playing a vital role in controlling pest populations in its habitat.