The Bedtime Scientist

Episode guide

Axolotls: The Super-Healing Smilers

The axolotl is a salamander that never grows up and can regrow almost anything it loses. This episode meets the calm little smiler from the lake canals of Mexico.

The science, gently

  • Axolotls can regrow entire limbs, and even repair parts of their heart and brain.
  • They keep their feathery gills their whole lives, staying water babies forever.
  • Their only wild home is one lake system in Mexico, which people are working to protect.

Wonder together

  • If you could regrow anything, what would you never worry about again?
  • Why do you think axolotls look like they are smiling?
  • What is one small thing you could do for animals that have only one home?

Tonight's calm-down

Axolotls heal by resting; stillness is their superpower. It is yours tonight too. Every quiet minute, your body patches and tidies and grows. Smile the axolotl's small smile, and let it work.