When we were at the waterfall, they told us that there were bears, moose, lynx, wolverines, and many other animals living in the preserve, but I didn't see any of them, probably because they were scared of people.
Just get off the tourist trail by a couple of kilometers, find a picturesque clearing, and sit there quietly for a couple of hours. You're bound to see something. The main thing is not to forget the way back...