What's endangering amphibians?

Why are frogs so endangered? Why should I care if amphibians are endangered? What amphibians are endangered in Washington state? 

Analyze This: Amphibian populations are on the decline

Endangered Frogs Released Into San Jacinto Mountains – NBC Los Angeles

Are Amphibians Endangered? The Species Loss Under Our Noses

Frogs suffer 'mass extinction' from fungus disease: Science

Saving the frogs from existential threats

Saving Endangered Species: A Case Study Using Global Amphibian

Palm oil expansion endangering rare frogs in Malaysia

IUCN Red List: Amphibians in Danger

Can a Salamander Find Salvation in San Antonio? - Atlas Obscura

Amphibians are in widespread decline, and climate change is to

Scientists survey medicinal potential of endangered frog family