The yellow-legged frog was once so numerous in Yosemite National Park that you couldn’t walk around the lakes there without treading on one.
Then a rapid decline caused by predators and disease saw 95% of the local population wiped out. Now a plan is in place to reintroduce the frogs in a scheme that hopes to make them self-sustaining within ten years. An initial trial in two lakes has proven successful and frogs will now be released into five more, with each hopping amphibian electronically tagged to allow its progress to be observed. Read more: nationalparkstraveler.com