6 of 20: In this photo provided by St Louis Zoo, Ozark hellbender are shown just after hatching at the St. Louis Zoo on Nov. 11, 2011 in St. Louis, Mo. The rare Ozark hellbender, an endangered amphibian found only in a few Missouri and Arkansas counties, has been successfully bred in captivity for the first time, offering new hope for the animal's survival, scientists involved in the breeding effort said Wednesday, Nov. 30, 2011. Officials with the St. Louis Zoo and Missouri Department of Conservation said the first captivity-bred hellbender hatched on Nov. 15 at the zoo. (AP Photo/St Louis Zoo, Mark Wanner) (AP Photo/ Mark Wanner)

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