Tadpoles are amphibian larvae that eventually turn into fully developed frogs or toads, and by the time these tiny swimmers make their transformations, they don’t look anything like their former selves. As tadpoles, they live in shallow water and do not have any appendages other than a tail. As they mature into frogs or toads, they begin to grow legs and arms while absorbing their tails. They go from having small mouths to growing large ones that span the width of their heads. Even their insides transform to make way for a new way of eating — going from a mostly plant-based diet to one that includes insects.