Not sure exactly, but i have ran into it often. Put you in a couple mud pie sets he will probably be back thru. Might be a big ole bachelor. They tend to travel alot. I see it alot on small creeks around here, couple chew sticks here and there , mabe a tree gnawed on but no real sign. But my guess is he will be back sooner or later. You got any big beaver foot traps and a deep enough spot of water to drown him in? If so i`d make a mud pie and put some castor on it,,if he comes back he`ll check it out!
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure."