With their goofy grins and feathery gills, axolotls have become stars of the pet world and video games like Minecraft.
But these small, smiling salamanders are also helping scientists explore a medical mystery: Can people someday regrow arms or legs?
Axolotls are special because they can regrow body parts no matter the age. Lose a leg? They'll grow it back. Damage to their heart, lungs or even brain? They can also repair that!
"This species is special," lead researcher James Monaghan, a biologist at Northeastern University in Boston, told The Washington Post. They have "really become the champion of some extreme abilities that animals have."
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