Disregard any government laws. It's all legal.
Scenario 1:
Tom wants to have intercourse with a very young girl. She and her guardians give their consent. Is this acceptable for him to do?
Scenario 2:
Jim, from his home, can see kids playing outside his window. He decides to masturbate. No one can see him. Is this acceptable for him to do?
Scenario 3:
Kayla notices that her dog is quite fond of her leg. She decides to have sex with her dog. Is this acceptable for her to do?
Scenario 4:
Jim and Kayla have just given birth to a baby girl. They kill her and bury her in the yard. Is this acceptable for them to do?
Scenario 5:
Mike likes to eat dog meat. He raises them and eats them. Is this acceptable for him to do?
Scenario 6:
Ashley loves her poodle, even more than her daughter. Her poodle receives more attention, but her daughter has all of her basic necessities. Is this acceptable for her to do?
1) Yes.
2) Yes. Especially as there is no specific indication as to why he's masterbating.
3) Acceptable? No as we can determine what he dog wants. Besides that, dogs and people do that for some different reasons. Is she trying to have dog-human babies? Or just likes the feeling?
4) Yes
5) Unfortunately, yes.
6) Yes
But since when is morality and the level of acceptance the same thing? You say is it acceptable, not is it moral. Strictly speaking they could have very different meanings/outcomes.