What the heck?!

What’s this? Vulpes vulpes schrencki resting in a snow mound by the road?
After a few minutes it rose from the snow. But wait!
It doesn’t have a tail!
There didn’t seem to be a scratch on the rest of its body, so what happened to the tail?
I could only guess, so I just prayed that it may continue to live well as it wandered off.
Photos: A tail-less Vulpes vulpes schrencki Mar. 26