A deep, resonant call echoing across the water at night,
a powerful body and wide mouth,
and remarkable survival instincts.

The American Bullfrog (Lithobates catesbeianus) is native to North America but has spread to many parts of the world. In some countries, including South Korea, it is known as an introduced species due to its strong adaptability and rapid population growth.

---

📌 Basic Information

• Scientific Name: Lithobates catesbeianus
• Habitat: Ponds, lakes, wetlands, slow-moving rivers
• Body Length: Can exceed 20 cm (8 inches)
• Lifespan: Approximately 7–10 years

It earned the name “bullfrog” because of its loud, low-pitched call that resembles the bellow of a bull.

---

🐸 Physical Characteristics

✔️ Large, wide mouth
✔️ Strong, muscular hind legs
✔️ Green or brown coloration
✔️ Large eardrum (tympanum) located behind the eye

During the breeding season, males produce especially loud and distinctive calls.

---

🌊 Ecology & Diet

The bullfrog is a powerful predator.

• Eats insects, fish, small reptiles, and even other frogs
• Opportunistic feeder
• Primarily active at night

When prey comes close, it strikes quickly with its sticky tongue.

---

⚠️ Ecological Impact

✔️ Highly adaptable and prolific breeder
✔️ Competes with native amphibian species
✔️ Considered invasive in some regions

Because of its strong adaptability, it can negatively affect local ecosystems where introduced.

---

The bullfrog is:

🐸 A large amphibian with a booming call
🌊 A versatile and efficient predator
⚠️ A species requiring management in certain ecosystems

Its deep nighttime calls across the pond reflect
the powerful survival instincts that have helped it thrive around the world.