- Mexican salamanders capable of regenerating entire limbs, tails, and even parts of their brains and hearts.
Sea cucumbers:
- Marine invertebrates that can regenerate their entire internal organs if they are damaged or lost.
Starfish:
- Echinoderms that can regrow entire arms if one is lost.
Hydra:
- Freshwater cnidarians that can regenerate their entire bodies from small fragments.
Planarians:
- Flatworms that can regenerate entire heads and tails if they are cut in half.
Salamanders:
- Many salamander species can regenerate limbs and tails.
Newts:
- Some newt species can regenerate limbs, tails, and even parts of their jaws.
Zebrafish:
- Small freshwater fish that can regenerate fins, hearts, and even parts of their brains.