noun
wrinkled frog; Rana rugosa
A species of frog native to East Asia. In Japanese, the katakana name ツチガエル is the usual written form.
ツチガエルは水田や湿地でよく見られる。
The wrinkled frog is often seen in rice paddies and wetlands.
ツチガエルの鳴き声は低くて短い。
The call of the wrinkled frog is low and short.
Compound of 土 (tsuchi, 'earth') and 蛙 (kaeru, 'frog'). The exact derivation is uncertain, but the name likely refers to its terrestrial habits.