To train a creature one must pet or punish it depending on its intentions to act (as manifested by the acts themselves, the creatures facial expression and body language, or one's angels telling one its state of mind). Make sure not to reward or punish the creature too much, unless it does something very good or very bad. If you pet or punish it 100% each time, it won't be able to tell which actions are better or worse than others. In most cases 10-30% is sufficient.