or -napper, subs. phr. (old).A dog thief (B. E. and GROSE).
c. 1696. B. E., A New Dictionary of the Canting Crew, s.v. BUFFENAPPER, c. a Dog-stealer, that Trades in Setters, Hounds, Spaniels, Lap, and all sorts of Dogs, Selling them at a round Rate, and himself or Partner Stealing them away the first opportunity.