Just as an off chance - what are you feeding Beckley? Dry or wet? It is possible that he has allergies to his food and, while a coincidence, starting reacting to that at the same time this horrible thing happened to him. Some of the symptoms of that are self mutilation.
Assumptions do nothing but make an ass out of u and me.
We can stick our heads in the sand for only so long before it starts choking us. Face it folks. The pet population is bad ALL OVER THE WORLD!