I'm not really sure what you're rambling about. Striking someone literally is physical violence, that isn't debatable unless you start arguing about your own personal definitions of words. Wolves don't have spoken language about moral concepts.
Again, worse things existing isn't an argument for something being okay. The argument is purely if disciplining children through physical/emotional pain is morally wrong when it is perfectly possible to raise them effectively without causing pain. Sure, some parents who don't smack etc. can still be shitty people, but that has nothing to do with the argument. Two wrongs don't make a right etc etc
RE: SPANKING: Appropriate or Abuse