In a happy love, the blood volume of a pet is one of the important indicators of its viability and durability. Class 69 pets, at least 10000 blood pets are enough. This amount of blood provides a certain viability and makes pets last longer in battle. In addition to blood volume, the skills, attributes and equipment of pets are also important factors that affect the combat effectiveness of pets. When choosing a pet, we should not only pay attention to the blood volume, but also consider other attributes and skills of the pet, so as to build a reasonable pet lineup and improve the effectiveness and success rate of the battle.