Source : Webster's Revised Unabridged Dictionary (1913)

Mange \Mange\, n. [See {Mangy}.] (Vet.)
   The scab or itch in cattle, dogs, and other beasts.

   {Mange insect} (Zo["o]l.), any one of several species of
      small parasitic mites, which burrow in the skin of cattle.
      horses, dogs, and other animals, causing the mange. The
      mange insect of the horse ({Psoroptes, or Dermatodectes,
      equi}), and that of cattle ({Symbiotes, or Dermatophagys,
      bovis}) are the most important species. See {Acarina}.

Source : WordNet®

mange
     n : a persistent and contagious disease of the skin causing
         inflammation and itching and loss of hair; affects
         domestic animals (and sometimes people)