Does look like a Bulldog, mot likely an English bulldog or possibly a Victorian or Dorset Old Tyme Bulldog, pretty much any of the Bulldog breeds with the (somewhat adorable) jowly frown.
I do like the fact that the Malifaux dogs do tend to be a breed rather then then the usual 'generic dog' you tend to get in games.
Now to convince Wyrd to do a Border Collie somehow, maeby as a miss model Miss Herd perhaps? XD