An Axolotl salamander, or Ambystoma mexicanum, swims in a tank at the Chapultepec Zoo in Mexico City, Sept. 27, 2008. Scientists warn that the roughly foot-long amphibian is just a few years away from extinction, a victim of the draining of its lake habitat, deteriorating water quality, and what is perhaps the final stake in its heart: the invasion of non-native fish species that are eating its eggs and larva, and competing with it for food. <span class=meta>(Photo&#47;AP Photo)</span>