Diario del proyecto Reptiles and Amphibians of California

They flatten their heads and hiss like rattlesnakes.

https://www.sandiegoreader.com/news/2019/may/06/stringers-valley-center-snake-lover-gets-reaction/

YOSEMITE NATIONAL PARK, Calif. (AP) — Red-legged frogs made famous by Mark Twain are thriving in Yosemite Valley after a decades-long absence.

https://kmph.com/news/local/red-legged-frogs-thriving-in-yosemite-after-long-absence

REDDING, Calif. — As warmer weather moves in to the Northstate, snake activity is increasing which means more human encounters are likely to happen.

https://krcrtv.com/news/shasta-county/rattlesnake-season-is-here-things-you-should-and-should-not-do-if-you-get-bit

SAN FRANCISCO— Conservation groups today filed a notice of intent to sue the U.S. Fish and Wildlife Service for failing to respond to a 2018 petition for Endangered Species Act protection for the Siskiyou Mountains salamander.

https://www.biologicaldiversity.org/news/press_releases/2019/siskiyou-mountains-salamader-04-22-2019.php

SAN FRANCISCO— Conservation groups today filed a notice of intent to sue the U.S. Fish and Wildlife Service for failing to respond to a 2018 petition for Endangered Species Act protection for the Siskiyou Mountains salamander.

https://www.biologicaldiversity.org/news/press_releases/2019/siskiyou-mountains-salamader-04-22-2019.php

Jeff Seminoff, marine ecologist and leader of the NOAA’s Marine Turtle Ecology and Assessment Program at the Southwest Fishery Science Center in La Jolla, and his team, are working with Navy biologists to study the turtles’ habitat and lifestyle.

https://www.redlandsdailyfacts.com/2019/05/21/150-million-seal-beach-naval-project-would-change-the-way-sea-turtles-travel-to-the-ocean/