Untitled Sighting

My family at the time where very much into the whole camping thing. And to this day I still hunt and fish whenener the opportunity presents itself. We went somewhere in the Aok Creek Canyon, Slide rock area and camped along the river. As usual I took off on my own too fish. I was fishing along the bank. ehind me the forest my heavily treed with dense under brush. I heard footsteps. Not your typical steps, but HEAVY thumping steps. When I turned to look I saw nothing and the thumping seemed to stop. When I decided I to get bak to the more serious business of trout fishing I heard it again. I looked around again and this time when It stopped I heard very heavy deep breathing. I was scared to  and flattened my back against a tree, trying to peer around I searched for the source of the noise, but could not locate it. I waited, I tried to make myself small, I was only 13. I stayed still for 20 minutes, my back pressed flat against the tree trying to look around without moving much. All the while I could hear that thumping walking sound and sometimes breathing. It sounded soooooooo close. Finally it stopped. I regained some courage. Shrugged it off as my very good imagination and started fishing again, but I was still nervous. I felt "watched". Again the thumping and breathing. And this time to my left I saw it. A shadow in the dark woods, but an unmistakable one. I saw a dark brown, black body. Maybe three inch fur. Shaggy looking. Six to seven feet tall. Moving away and at an angle. Approximately 35 to 40 feet away. As soon as I saw him he was gone. The woods where thick.