As rãs, or frogs, are amphibians known for their smooth, moist skin and long hind legs, which make them excellent jumpers. They typically live in or near water, as they need it for breeding and to keep their skin hydrated. Rãs are found on every continent except Antarctica and come in various colors and sizes. Rãs undergo a life cycle that includes stages as eggs, tadpoles, and adult frogs. They are important to ecosystems, serving as both predators and prey. Their diet mainly consists of insects, making them beneficial for controlling pest populations. Additionally, rãs are sensitive to environmental changes, making them indicators of ecosystem health.