feisty

In certain parts of the United States, most notably the South, the noun feist (pronounced to rhyme with heist) refers to a small dog used in hunting small game animals (such as squirrels). Also spelled fice or fyce, it comes from an obsolete term, "fisting hound," that derived from another obsolete term, fist, a verb that once meant "to break wind." The term feisty has come a long way from its flatulent origin, but its small-dog association still seems relevant: the term conveys the spunk and determination that one may associate with a dog that manages to make its presence known (either through its bark or its bite) despite its small size.