Source : Webster's Revised Unabridged Dictionary (1913)

Puffing \Puff"ing\,
   a. & n. from {Puff}, v. i. & t.

   {Puffing adder}. (Zo["o]l.) Same as {Puff adder}
   (b), under {Puff}.

   {Puffing pig} (Zo["o]l.), the common porpoise.