Skip to main content

How do animals regrow their limbs? And why can't humans do it? - Jessica Whited

500,877 Views

1,021 Questions Answered

TEDEd Animation

Let’s Begin…

For some animals, losing a limb is a decidedly permanent affair. But for salamanders, particularly axolotls, amputation is just a temporary affliction. Not only can they grow back entire limbs in as little as six weeks, they can also regenerate heart and even brain tissue. So, how does this astonishing adaptation work? Jessica Whited explores the incredible regenerative capacity of salamanders.

What features of a limb must be correct if the regenerated limb is to be perfect?

Sign in to answer question

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Jessica Whited
  • Director Anton Bogaty
  • Narrator Jack Cutmore-Scott
  • Sound Designer Cem Misirlioglu
  • Composer Cem Misirlioglu
  • Director of Production Gerta Xhelo
  • Produced by Abdallah Ewis
  • Editorial Director Alex Rosenthal
  • Editorial Producer Dan Kwartler
  • Script Editor Nidhi Upadhyaya

More from How Things Work