Species: froggit
Froggit (/ˈfɹɔː.gɪt/) is a species of monster encountered in the Ruins. Froggits also appear as NPCs throughout the Ruins. Its Hard Mode and CORE counterpart is Final Froggit.
Froggit's overall appearance is that of a white frog. Only its two front feet are visible, with three black dots on its chest. Between its two front feet is what appears to be some small creature with a rounded mouth and eyes that excessively blink. What exactly this creature is is unknown, as it is never mentioned in Flavor Text or by any Froggits.
This tag implicates undertale_(series) (learn more).