As legend has it, the axolotl is the Aztec god of fire and lightning, Xolotl, which disguised himself as a salamander to avoid being sacrificed. But these Mexican amphibians are impressive enough on their own, with the ability to regenerate lost limbs and stay “young” throughout their lives.

Unlike other salamanders that undergo metamorphosis, axolotls (pronounced ACK-suh-LAH-tuhl) never outgrow their larval, juvenile stage, a phenomenon called neoteny.

Their youthful traits include feathery gills sprouting from their heads like a mane, webbed feet, a dorsal fin that runs down the length of their body, and a tail. Though they keep their gills, adult axolotls also have functional lungs and can breathe through their skin. And as if being forever-babies didn’t make them cute