@Robert Gentel,
Hmmm..so you're kind of saying WE'RE putting ourselves out of OUR misery, in such situations as the poor dumped dogs?
They'd certainly fight for life as much as we would in similar circumstances....
(I am wondering, though, on a practical level in this particular case, if Set's shooter was just pre-empting what the farmers would likely do. Feral dogs kill and maim livestock to a terrible extent and in a horrible way, and they would certainly be shot...or worse baited...here.
I am also wondering if truly uncared for packs of wild dogs might, at least, not do the awful maiming of large numbers of animals that tame dogs that get out do? Truly self-providing animals might well become as parsimonious with their hunting energy as most predators are in the wild, given that they need to have available calories to expend on the hunt.
Though perhaps the extensive maiming thing is just something dogs do when they have prey that can't get away, like livestock in enclosures, or that can't get through fences? Foxes do it in hen-houses....anyhoo this is a separate musing, not relevant to the thread...)
We certainly make a lot of assumptions about what is best for animals.
Although, someone has already made the point that packs of dogs roaming in cities are likely to "have to" be eradicated, anyway, to protect ourselves from attack and such, and our pets from being eaten.
A remote aboriginal community I visited recently was about to cull the the dogs.....the lore was very much that, once they formed packs, they were dangerous (given the number of dogs, I assume this lore came from experience.) It was noted that they had killed a feral donkey recently, and one was warned NOT to walk out of near reach of the nearest house, and smaller children were not being allowed away from adults.