The proper care of the fancy rat: which is the domesticated version of the Brown, Field, Common, Sewer, Hanoverian or Norway Rat Rattus norvegicus (sometimes referred to as Rattus decumanus or Mus decumanus in old text-books).

Note that many of the rat-husbandry tips given on this site are based on the usual accepted wisdom in Britain. Some authorities in America consider that wood-shavings made from pine or other resinous woods are harmful (see Housing), and recommend routine spaying, specially-prepared healthy foods and etc.. The increase in ratty lifespan which is gained by these methods seems to be