What's endangering amphibians?

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

F Is for Frog: ABCs of Endangered Amphibians (A+ Books: E for

Deadly fungus threatening hundreds of amphibian species

Endangered Species International

Saving Salamanders: The Key Role These Endangered Amphibians Play

IUCN Red List: Amphibians in Danger

Endangered and Extinct Amphibians - Lerner Publishing Group

All about Amphibians

Amphibians Defenders of Wildlife

Video: Endangered Honduras Frogs Get a New Health Clinic

Species - EDGE of Existence

13 Amazing and Critically Endangered Frogs

Amphibian crisis: 41% of species deemed threatened with extinction

Frogs Are Disappearing. What Does That Mean? - The New York Times

The 9 most endangered species of amphibians