What kind of frog makes whistling sound at night?

The frog known for making a whistling sound at night is often the Eastern Whip-poor-will Frog, commonly found in North America. Another example is the Coqui frog, native to Puerto Rico, which produces a distinct, high-pitched whistle. These frogs use their calls primarily for mating purposes and to establish territory. Their nighttime vocalizations can create a unique and recognizable soundscape in their respective habitats.