frog | Kermit the Frog | Order of the Arrow | Green Arrow | Broken Arrow | Arrow | Strong Poison | Poison Ivy | Poison Idea | River Arrow | poison oak | Michigan J. Frog | Broken Arrow (1996 film) | The Princess and the Frog | The Flame and the Arrow | The Celebrated Jumping Frog of Calaveras County | Poison Ivy (comics) | Frog Design Inc. | Broken Arrow, Oklahoma | Time's Arrow (Star Trek: The Next Generation) | Time's Arrow | The Arrow | River Arrow, Worcestershire | Pretty Poison | poison ivy | Frog | California red-legged frog | Black Arrow | Arrow (TV series) | Arrow Rock, Missouri |
The idea was popularized among modern conservationists independently by Peter Scott and Gerald Durrell in the 1950s and 1960s, founders of the Wildfowl and Wetlands Trust and Jersey Zoo, who demonstrated success with a wide variety of life forms in the 1970s ranging from birds (e.g. Pink Pigeon), mammals (e.g. Pygmy Hog), reptiles (e.g. Round Island Boa) and amphibians (e.g. Poison arrow frogs).