Frogs

Frogs are among the most abundant species on Earth, with species found on every continent, except Antarctica. Being amphibians, young frogs are birthed as eggs, though some species develop inside the mother and are born as small adult frogs. With the exception of some "live-birthing" species, frogs are born as tadpoles and spend several months in metamorphasis, where they slowly develop into an adult frog, and resemble their parents. Many frogs have different ways of developing, many mountain species lay their eggs on land and the tadpoles instead develop into froglets, and some guard the eggs until they hatch before moving them to predator-less puddles, and feed them until they reach adulthood. Frogs also help humans in determining the effects we have on the changes we make to the environment, as frogs develop quickly and mutate more easily than other animals.

__**References:**__ http://amphibiaweb.org/amphibian/facts.html [] http://en.wikipedia.org/wiki/Frogs