My home town had an extreme dog problem in the early 50's to the point that packs were taking down cattle and anything else they found. Hunting party's were organized and a bounty was placed on dogs without a collar of $1 each. In a short while the problem was eliminated.
In the sixties my friends and I were buying 22 ammo at the hardware store when a farmer asked us to hunt feral dogs at the city dump. There was a large pack of 50-60 dogs and they were killing his young hogs. We went there and killed most of them. Some were aggressive and attacked when wounded. Sort of dangerous game hunting. One guy had a single shot and was being pursued by a wounded dog. He was begging for help as he ran. I took it out with a shot to the head.