Rana catesbeiana, commonly known as the American bullfrog, is a large species of frog native to North America. It typically inhabits freshwater environments such as ponds, lakes, and marshes. Adult bullfrogs are known for their distinctive deep croaking sound, especially during the breeding season. They can grow up to 8 inches in length and have a green or brown coloration with a lighter underside. This species is an opportunistic feeder, primarily consuming insects, small fish, and other amphibians. Rana catesbeiana plays a significant role in its ecosystem, serving as both predator and prey. Due to its adaptability, it has also been introduced to various regions outside its native range.