Otters are even harder to spot; the coypu, a North American water rat, is more commonly seen.
Source: wiktionary
Water rat
Synonyms for "water rat" (6 found)
Ranked by relevance and common usage.
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Sample sentences
2 total sentences available.
"There [...] you will find the water-hole that is sacred to Biggoon, the giant water rat."
Source: wiktionary