I have to agree with explody pup
I grew up in poverty farmland right in the middle of the bush. No one would ever take an animal to a shelter to put them down, they did what had to be done themselves. Anyone who did other wise was thought to be eccentric.
From a very early age I had to kill many half dead animals, felt extremly sick every time espeasially since I had to use what was at hand to finish the animal off. We were brought up not to allow an animal to suffer, pet or otherwise.
The farmers on occasion would have to thin the multidudes of barn cats other wise there would be to many and there would be a mass of diseases along with hunger.
Lets face there are too many puppies not enough pet owner wannabies. This person was not torturing the puppies, he just took matters into his own hands and probably did what he thought was the responsible thing to do, it may have actually taken courage to do it. It appears that the puppies did not suffer a long cruel death
Sometimes I think that growing up in the age of Walt Disney with talking animals with highly evolved emotions has given us a warped sense of nature, I include myself in this group.
Probably should not submit this as I know my views in this day and age are not popular, but I will anyway.