After reading through some of the tutorials, I now have a firmer grasp on vivosaur battles. In addition to type advantages- water is effective against fire, fire is effective against wind and so on- vivosaurs stances play a major role in battles. After a vivasaur attacks, they are left in a certain stance depending on the attack. Vivasaurs are vulnerable in particular stances and show their weakness by shaking. It is important to avoid leaving your vivasaur vulnerable and take advantage of enemy vivasaurs when they are in their week stance.