Watch how a group of wild dogs kill their prey, then realise that for milenia human like apes were part of their diet. Even the modern battlefield is more humane than the African savannah.
Yeah, I tracked a lost dog and found the place it was caught by wolves and eventually eaten. Terrible way to go. I get now why the owner was so desperate to find it, even without any hope of the dog surviving - I'd want to end it quicker for my dogs too if this happened to them.
It's almost military precision.
[0] https://www.youtube.com/watch?v=MRS4XrKRFMA