The Earliest Land Vertebrates Were Amphibian-Like Creatures
Tetrapods such as Ichthyostega lived about 365 million years ago. They had limbs and spent time on land, and are ancestors of amphibians and every other land vertebrate.
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The Goliath Frog Can Weigh Over Three Kilograms
Native to Cameroon and Equatorial Guinea, the goliath frog is the world's largest frog. It is roughly the size of a house cat.
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The Chinese Giant Salamander Is the Largest Amphibian on Earth
Andrias davidianus can reach nearly two meters in length, though wild populations are critically endangered after decades of overharvesting.
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Amphibians Can Breathe Through Their Skin
Many amphibians absorb oxygen across thin, moist skin. Lungless salamanders, the largest salamander family, rely on it almost entirely.
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Caecilians Are Legless Amphibians That Look Like Worms
Caecilians burrow through tropical soil and have tiny eyes hidden under skin. Some species even let their young feed on a nutritious layer of the mother's skin.