beaver /b'i:v.r/: 河貍
otter /'at.r/: 水獺
sea otter: 海獺
水獺的照片看起來比較像松鼠(squirrel)
而 河狸的照片比較像地鼠(gopher)
//===
rodent
齧齒目 / 科?
gnaw /n>/
gnawing
啃 / 嚙
//===
Beaver fish !== Weever fish
Since beaver, the semi-aquatic rodent, is a skilled swimmer, the Catholic Church once declared it was a fish.
https://zh.wikipedia.org/wiki/%E9%B2%B6%E9%B1%BC%E6%95%88%E5%BA%94
Catfish effect == Weever fish effect == 鯰魚效應
//=== Beaver
Order: Rodentia
Genus: Castor
//=== Otter
Order: Carnivora
Subfamily: Lutrinae
Type genus : Lutra
Genera :
-- Amblonyx
-- Aonyx
-- Enhydra
-- Hydrictis
