Here there be beavers!
A tree about halfway through chewing by beavers. It has the classical hourglass shape where they've been working their way to the center.
A tree trunk that has been just been started at by beavers. It's about two feet in diameter, and the beavers have gotten through the bark and started to expose the pale center.
A snowy tree that has been worked at by beavers. But it's still standing. They have some more chewing to do.