noun
Sado mole; Tokuda's mole
A species of mole endemic to Sado Island, Japan. Scientific name: Mogera tokudae.
サドモグラは佐渡島だけに生息する固有種です。
The Sado mole is an endemic species found only on Sado Island.
Named after Sado Island (佐渡) where it is found, combined with 土竜 (mole). The exact derivation is straightforward.