We believe that life started in the water. Driven by evolution, it migrated to the land for the sake of more food or simply the water dried up in the environment. The amphibians act like something in between. Some like to be in the water most of their time and others prefer stay longer on the land. However, most of their juvenile stages in life cycle still highly depend on water. What are their strategies to ensure their youths can survive? Some make it by numbers and others learn some other techniques. No matter what, they have to finish their growth before the water dried up.