A life cycle repeats itself or goes in a circle for each new generation of life. There are lots of different kinds of animals living on earth and many different types of animal life cycles! Mammals including humans have babies that look similar to adults. Baby mammals grow bigger and bigger until they are full-grown. Other animals including beetles, frogs, and butterflies go through a process called metamorphosis. Metamorphosis is a big word that means changing from one form into another.
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura literally without tail in Ancient Greek. The oldest fossil "proto-frog" appeared in the early Triassic of Madagascar , but molecular clock dating suggests their origins may extend further back to the Permian , million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforests. They are also one of the five most diverse vertebrate orders. Warty frog species tend to be called toads , but the distinction between frogs and toads is informal, not from taxonomy or evolutionary history.
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