Why I dare to kill fish and eel. But dare not kill dogs and pigs!
This has nothing to do with being soft-hearted, but with bullying the good and fearing the evil. You dare to kill fish eel because fish eel won't resist, and you dare not kill dogs and pigs because dogs and pigs will resist and will do you harm. This does not mean that you are a kind person, because killing anything is killing, just proving that you are afraid of killing you.