This is the 3rd time I am using this title on a blog post. It is indeed quite common to come across standing trees whose trunks beavers gnawed but left before felling them. Yesterday's post had a picture of a beech tree that had been the focus of interest of a beaver and which I had photographed from afar. Today I went back to the same spot and took better pictures.
Here is a closer look at the teeth marks left by the beaver on the trunk.
The marks of the 2 front teeth are distinct.
The previous posts with the same title as this one were here and here.