Axolotls are amphibians, specifically neotenic salamanders that live their entire lives under water- for the most part. Occassionaly, they will undergo metamorphasis and grow land limbs, but even then, they will spend most of their time under water. They are known for their incredible regenerative adaptation. Limbs that are lost are grown back and make full recoveries without any scars. When a limb is cut off, the cells lose their identity and become pluripotent cells, stem cells that take on the part that was lost. The extent of this ability is so profound that they scientists have been able to transplant the head of one axolotl onto the back of another and have them survive for months. Unfortunately, in the wild, they are only found in one location and are under critcal pressures of pollution, and are endangered due to loss of habitat. Originally, they were numerous in Mexico and were revered by the Aztecs during their peak.
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