What is the biggest frog in the world?

During 1966, Charles and his party from the National Geographic Society of the United States visited the Goliath River in Africa and found a giant frog named Goliath Frog. This frog lives near rapids or waterfalls and often lies motionless on rocks. It moistens the skin through the water mist collided by rapids or waterfalls to avoid the damage caused by extreme heat. The local people gave this giant frog a poetic name "Limona", which means "mother's son". Because it not only looks like a newborn baby, but also is as big as a baby. The giant frog's head is as big as a saucer and its limbs are as thick as a human wrist, so that it is 90 cm long from head to toe and weighs 3 kg. There are suction cups at the toes of the limbs, which can be adsorbed on smooth rocks. This frog's hearing is very sensitive, and it will run away at the slightest sign of trouble, but they are unaware of the threat from behind (which seems to be a common fault of frogs), and the locals can skillfully catch it. The scientific name of the giant frog should be Ranagoliath, so it is also called "Goliath frog". It is very similar to American bullfrog, but when the bullfrog grows to 18 ~ 20 cm, it no longer grows, while Goliath frog can continue to grow. It is said that another new world frog was discovered in Sumatra in 1969.