[Para Bellum]

In German we call this a "Krell-Schuss" / "Krell-Shot" it happens when you hit the back very high above the spinal cord. The wound is very small and can easily be survived in cold seasons. But for the first Minutes the hydrodynamic shock of the bullet passing through the edge of the back irritates the spinal cord so much, that it shuts down for a couple of seconds/minutes. It's similar to a knock out in boxing. Little damage, still the darget drops simply due to shock caused to the CNS.

I hope this didn't happen in hot weather. If so, the animal stood little chances of survival because parasites will conquer the wound on the back where the animal can't reach. The parasites will weaken the animal and open an entrance for infections etc, making it impossible to survive winter