Herbivores need to eat plants to survive. Not being designed for combat they have a moderately low health pool. But can output fairly decent damage if they need to defend themselves. And a high amount of stamina to run away if needed. Unlike Carnivores these prehistoric animals cannot eat meat. Herbivore herds are often used to defend themselves together if a roaming Carnivore gets too close or decides that a member of the herd will make a good meal.