fletch_talon said:
If you knowingly take a shortcut through a backyard with a dog, or a park with an aggressive magpie then its your own stupid fault if you get hurt.
I agree with you on the dog for the most part, you should actively be avoiding places like that if you have an ounce of sense in your skull. However, as someone who lives in Australia, where magpies are abundant, I can tell you that they are vicious, hateful birds who will attack you for having the audacity to exist anywhere NEAR their nests, even when they build them along common walkways and footpaths humans use, and even when you give no indication of any interest in them whatsoever. Oftentimes you won't even know you're near a magpie nest until the little monster is stabbing you in the head with its beak.
So slaughtering the little bastards for pecking you in the back of the head hard enough to bleed with their diseased little beaks isn't animal cruelty, in my eyes. It's selection pressure on the species to weed that trait out. The same applies to other self-defense situations against animals, so long as they are the aggressor and they clearly have harmful or lethal intent, as well as the means the execute that intent. Obviously an angry cat doesn't pose the same threat as a large dog, so you shouldn't treat it as the same threat.