The Bronx and the Toledo zoos will continue to maintain what is called an "assurance population" of the spray toads and have them on exhibit for visitors to see. The released toads and their habitat will be closely monitored to ensure that environmental conditions remain favorable and to keep tabs on the progress of the animals.
The ultimate cause of extinction of this species in the wild is still being debate. But scientists hypothesize that a combination of habitat change, pesticide exposure and the emergence of infective chytrid fungus led to their demise. Chytrid is responsible for alarming declines and extinctions of amphibian species throughout the planet.
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