A frog's life begins as a tadpole in the water, and water plays a crucial role in every stage of its life.
Frogs live almost everywhere – from tropical forests to frozen tundra to scorching deserts. They sport an amazing range of survival strategies.
A Fish Out of Water
Their high adaptability has seen them through good times and bad.
Some 365 million years ago, amphibians evolved from ancient fish and became the first back-boned animals to colonize land. Early amphibians left behind a totally aquatic life and paved the way for the evolution of mammals, reptiles, and birds.
Today frogs and other amphibians live in all but the harshest land environments, although many remain tied to water for development of their eggs and tadpoles.
