Axolotls are 1000 times more resistant to cancer than mammals. They can regenerate pretty much anything in their bodies; including limbs, jaw,s tail, spinal cord and skin.
It can regenerate spinal cord even after being cut, crushed or removed. They can regenerate the same limb more than 100 times without showing any signs of scarring at the site of amputation.
Axolotls can even regenerate part of their brain after being cut. They can also receive transplanted organ from each other, and accept them without rejection.
most importantly, It resists cancer.
Scientists are hoping to replicate these features in humans. An axolotl remains in its larval form its entire life. In the wild, it never undergoes metamorphosis into an adult salamander.
A single injection of iodine can turn young axolotls into adult salamanders.
It is listed as critically endangered by the IUCN.