> If so, is a person's moral code something they choose to enrol in, or is it something given from above e.g. by a god, without choice of an individual, in your understanding?
Some people believe that their moral code is given to them by god, some try to base their moral code on logic, some people integrate the code held in their society and don't think about it very much.
> What do you mean by "unnatural"? Can you give examples for
humans - I'm not sure what do you mean by that. It is natural for humans to have their behavior influenced by moral causes. It is unnatural for humans to have no moral code, I guess, or to consistently behave in a way that is not influenced by any moral code.
poodles - I guess it will be unnatural for a poodle to refuse a treat in reward for something that another poodle did, on the basis that the treat should be given to the other poodle.
jackals - It will probably be unnatural for a jackal to hunt an healthy creature instead of a sick one, just because the sick one is a parent who tends to young ones, even if he could do so with a little bit more effort.