The natural world is filled with marvels, but few are as compelling (or as mysterious) as the ability to regenerate lost body parts. While many creatures in the animal kingdom must live with the permanent consequences of injury, some species defy this biological finality with astonishing resilience.
This rare ability all comes down to the unique traits that some species have in their genetic coding. The very cells that build up their bodies are designed to regrow limbs in astonishing ways. But why is it that humans are unable to do this? And how exactly does limb regeneration actually work? Click through this gallery to find out.