Dogs are extremely versatile and tough creatures. We see some pretty bad injuries in our ranks and some of the things the dogs just keep on keepin' on because unless an org like our is around, no one is going to help them. This is particularly noticeable in leg injuries where the dog just immediately learns how to walk and even run without the use of the injured leg.
Piercing a dog on a spike is a big one though. that is impressive that she wasn't even complaining about it.