Seriously, we have never found any corpses from this beast and with the amount that man has spread out, I am 100% certain we would have found the beast by now.
At the risk of sounding like a tinfoil hat wearing lunatic, just a few years ago I remember seeing several scientists stating on camera that they believed that every large mammal on earth was already documented and known to science. Not long after that I read a news piece reporting the discovery of several previously unknown species of mammals including a species of deer that reportedly weighs in at 150lb. Another example is a species of whale native to the Southern Arctic that is only known from a few DNA samples obtained from whalers. The point being that even though it is fun to ridicule crypto zoologists, there are numerous examples even in this day and age of unknown species hiding right under our noses.
Here are some relevant lists for your perusal:
List of megafauna discovered in modern times
List of recently discovered mammals
List of cryptids
Not very many on the second list that I would consider "large" (scientific definition of "large" in the context of megafauna is somewhat ambiguous, though often bounded on the lower end at 100 pounds). Most of the creatures on these lists are very similar to already known and described species (the giant peccary, for example), and aren't very impressive discoveries from a lay viewpoint. Notice on the "list of cryptids" there is only one creature with "confirmed" status - the Okapi, discovered over a century ago.