In this Friday, February 21, 2014 photo, Biologist Armando Tovar Garza from Mexico's National Autonomous University holds a young axolotl in his hand at an experimental canal run by the university in the Xochimilco network of lakes and canals in Mexico City. Investigators have begun a search in hopes of finding what may be the last free-roaming axolotl. Not one axolotl was found during last year's effort at finding them in the wild in Xochimilco, their only natural habitat. The axolotl is known as the “water monster” and the “Mexican walking fish”. (Photo by Dario Lopez-Mills/AP Photo)
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