ENDANGERED SPECIES: FWS extends protections to 3 frog species Jessica Estepa, E&E reporter Published: Monday, April 28, 2014 Three species of frogs found in the Sierra Nevada will be protected under the Endangered Species Act. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.