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The first vertebrates to colonize terrestrial habitats, amphibians remain closely tied to water. Most return to water to reproduce, and they have moist scaleless skin, only rarely living in drier environments. Amphibians characteristically emerge from eggs as larval tadpoles, later undergoing metamorphosis to their adult forms.
More often heard than seen the bullfrog can be remarkably hard to spot, despite its size. Learn More
Mudpuppy is just one of the unusual names by which this elusive amphibian is known. Learn More
Just one of the more than 200 species of poisonous frogs so far discovered. Learn More
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Coast live oak trees punctuate the prairie grasslands at Chimineas Ranch, a protected wildlife corridor linking the Carrizo Plain National Monument with Los Padres National Forest, located within San Luis Obispo County, California. © Mark Dolyak