Absolutely. They're too dangerous, at least on Survivor, to leave alive, especially if you want to thoroughly loot areas before moving on. They get no hesitation from me, but the level graphic detail that's treated on them is overly nasty I think. I feel serious pity for the poor bastards who had to animate and polish up a bunch of interactions of dogs being stabbed, dogs being beat with a baseball bat, dogs being brutalized with a hammer, etc. It was next level when I placed an explosive trap in front of someone patrolling with a dog; they modeled and textured mutilated headless/limbless dog corpses. That's too nasty imo.