The largest living amphibian is the Chinese Giant Salamander (Andrias davidianus). The maximum size of this river-dweller is 64 kg (140 lb) and 1.83 m (6 ft).
Before aminotes became the dominant tetrapods, several giant amphibian-like tetrapods existed. The largest known was the crocodile-like Prionosuchus, which reached a length of 9 m (30 ft).
- Frogs (Anura). Easily the largest member of the largest order of amphibians is the African Goliath frog (Conraua goliath). The maximum size of this species is a weight of 3.8 kg (8.4 lb) and a snout-to-vent length of 35 cm (14 in).
- The largest of the toads is the Cane Toad.
- Caecilian (Gymnophiana). The largest of the worm-like caecilians is the Thomson?s Caecilian (Caecilia thompsoni), which reaches a length of 1.5 m (5 ft) and can weigh up to about 1 kg (2.2 lb).