Axolotl

The Axolotl is a fascinating aquatic salamander. Native to Mexico's ancient lake system, this extraordinary creature possesses remarkable regenerative powers, capable of regrowing entire limbs, spinal cords, and even parts of its heart and brain. Scientists study this rare ability in hopes of uncovering new ways of growing human tissue lost due to illness or injury.  Amazingly, these cute amphibians are neotenic, meaning they never undergo complete metamorphosis (as in tadpole to frog), and thus retain their aquatic lifestyle, which scientists are also interested in. Sadly, they face threats of extinction due to habitat loss and pollution, marking the urgency of conservation efforts.