From LiveScience:
One of the most endangered amphibians in North America, the Wyoming toad has undergone an intensive captive breeding program, where toads are raised in zoos and released into Wyoming’s Laramie basin, where they were discovered in the 1940s.During the 1970s and ‘80s, the toad disappeared from its already limited range, succumbing to threats such as toxic pesticides, habitat degradation, and disease.
To reestablish the wild population, more than 50,000 toads, raised in captivity by ten zoos, have been successfully released.
See also here.
Wildlife Survey in the Presidio
The Presidio in San Francisco is home to a healthy number of native reptiles and amphibians, according to extensive surveys conducted by the Academy’s herpetologists. They discovered that three native amphibians – the California slender salamander, Ensatina, and arboreal salamander – were the most widespread species, compared to a relatively low occurrence of introduced species. Their project is part of a larger effort to document the Presidio’s biological, environmental, and archaeological features.
California Academy, May 2007
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