water dog
  會水的狗,水性好的人,水獺
  Wa·ter dog
  1. Zool. A dog accustomed to the water, or trained to retrieve waterfowl. Retrievers, waters spaniels, and Newfoundland dogs are so trained.
  2. Zool. The menobranchus.
  3. A small floating cloud, supposed to indicate rain.
  4. A sailor, esp. an old sailor; an old salt.  [Colloq.]
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  Hell·bend·er n. Zool. A large North American aquatic salamander (Protonopsis horrida or Menopoma Alleghaniensis). It is very voracious and very tenacious of life. Also called alligator, and water dog.
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  water dog
       n 1: a person who enjoys being in or on the water [syn: water
            rat]
       2: a dog accustomed to water and usually trained to retrieve
          waterfowl