They play an important role in the clinical research - the axolotl, Ambystoma mexicanum

The axolotl is an aquatic salamander, only native to lakes in Central Mexico. The so-called water monster, which is what the word axolotl means in Aztec language, is a biological sensation! Axolotls remain babies throughout their lives with all its typical larval traits, including the possession of embryonic tissue. This is why axolotls have breathtaking regeneration capabilities: if they happen to lose a leg or some gill tufts, they simply regrow them. They can even regenerate their spinal cord, what makes the Axolotl an interesting subject to clinical research.