Looks like Vulpes was upset by something the city did. Once a peaceful fox, he would surely soon strike and unleash his wrath upon the city.

And after that little pathetic bit of backstory, this was done by  ohohflamethrower
He was very patient with me and I really appreciate it, and the product of his work is just fantastic.

A link to a combination of this picture and a following action is found here: http://www.furaffinity.net/view/13844308/
Kind of a transition in the middle of the piece to the middle of the rampage.