The African bullfrog is one of the largest frogs, and can reach about 20 cm in length and 2 kg in weight. It stands out for its robust body, with a wide and voluminous head and mouth. Its color is generally olive green, although it has yellowish, brown or orange tones. The size of the males is usually much larger than that of the females, something not very common in these species.
It spends most of the day buried, waiting for prey to pass by so it can be captured. Its hind legs have tubercles that allow it to dig, and its lower jaw has two fang-shaped protuberances. It is a very voracious species that feeds on insects, small birds, reptiles, rodents, and even other amphibians.
Their reproduction is linked to the rainy season, when the males leave their hiding place and go to water areas. After copulation, the female releases thousands of eggs that are fertilized shortly after by the male. If the puddle where the eggs are found dries up, the male is capable of opening new channels that connect with nearby ponds so that they do not lack water. Their populations are affected by urbanization, and their meat is highly valued in certain places.