Beautiful but deadly: the perfect words to describe the poison dart frog. These amphibians gain their striking name from the toxin contained in their skin. A single frog could take down several ...

Curare [kyoo-RAW-ree], for example, is found on the skin of colorful poison dart frogs. Another special feature of most amphibians is their egg-larva-adult life cycle. The larvae are aquatic and ...

Some, like the poison dart frog, give off toxins so powerful that ... role in ecosystems both as prey and predator. Tadpoles eat algae and keep our rivers and canals clean. Full-grown frogs ...