i've only ever ran over a wild rabbit and was close to tears for the next couple of miles, i can't imagine the guilt and remorse for hitting a loved pet. some of your' stories are awful but i think you did the right thing! which would you prefer, killing an animal or killing yourself? i know that if our dogs got out and caused an accident iwould feel responible as well.
as for the killing of penned animals that's not hunting that my friends is butchery if you're going to hunt at least have enough respect for your' prey and do it in the wild where you have to have compasion respect and skill!
sorry for the rant, i read alot of wilbur smith books