Nanorana quadranus

Nanorana quadranus (common names: Kwang-yang Asian frog, swelled vent frog) is a species of frog in the Dicroglossidae family. It is endemic to central China. Its natural habitats are temperate forests and shrubland, with breeding taking place in small rivers. It is a common species believed to be declining. It is threatened by collection for food and also habitat loss.

Nanorana quadranus are relatively large frogs: males grow to a snout–vent length of about 82 mm (3.2 in) and females to 90 mm (3.5 in). Tadpoles are up to 86 mm (3.4 in) in length.