Take a rear foot and pinch with your nail that web between the toes. If he pulls against the pain or acts like he's feeling it, it could be temporary damage and GarlyDog is right. If there is no reaction at all, I would say it doesn't sound good.

One of your neighbors may be willing to kill it with a head shot with a .22 pistol. One shot in a deadened area (maybe some loud music playing) probably won't be noticed if you are discreet.

Sue (worked for vets for 12 yrs)