That art style, ugh! It's as if the animators (and the manga-ka) had never seen a dog before, much less seen one in action. Not to mention their mouths are open ALL. THE. TIME.
Weed is averse to actually killing, but will still leave some that he fights to a fate worse than death? Kamikiri had his fangs and testicles ripped off, and it was implied that after Weed and his group left him, he was eaten by crows. Ouch.