It was a winter kill for sure cause it wasn't there in the fall. I've seen some wolf kills that still had a bit of meat on the bones. Wolves will even eat the nose on a deer, just leaving the top of the skull. Weather the wolves killed it , who knows. Maybe it was ready to die when the wolves found it.

But the fruits of the spirit is love, joy, peace, patience, kindness, goodness,faithfulness, Gentleness and self control. Against such things there is no law. Galations 5: 22&23