For an explanation, see the main splats page
- Amphibians make a natural grouping of animals, almost all other than the axolotls having a juvenile aquatic stage and an adult terrestrial stage.
- Modern amphibians are the descendants of the first vertebrates to move out of the water onto the land. Most of them have evolved a great deal since that time.
- The development of an egg into a tadpole and the metamorphosis of a tadpole to an adult may be observed with ease, making them ideal laboratory animals.
- Frogs and toads fit the terrestrial vertebrate body pattern, having an endoskeleton with four pentadactyl limbs, and a brain located in the skull.
- Many of the amphibians have well-developed powers of regeneration, and they may even be able to regenerate lost limbs. Other vertebrates lack this ability.
- Many amphibians around the world are endangered species, but the reason is still a matter for debate. It may be caused by pesticides, Fungi, or something else.
- Amphibians undergo a form of metamorphosis as they develop from tadpole to adult, a change in body form that is far greater than that of any other vertebrate.
- The amphibians, which have external fertilization, gave rise at some point to the early reptiles, which had
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