pygmy musk deer

from The Collaborative International Dictionary of English v.0.48

Napu \Na*pu"\, n. [Native name.] (Zool.)
   A very small chevrotain ({Tragulus Javanicus}), native of
   Java. It is about the size of a hare, and is noted for its
   agility in leaping. Called also {Java musk deer}, {pygmy musk
   deer}, and {deerlet}.
   [1913 Webster]