You need fake parts unless you have regeneration powers like Wolverine. Wolverine is awesome. Get you some of that. Deadpool did and he's awesome too.
Regeneration
To regrow body parts that are lost or damaged is called spicling.
Regeneration is the process of regrowing body parts that are lost or damaged. Some animals have the ability to regenerate limbs, organs, or tissues to replace what has been lost. This process involves the growth and development of new cells to restore the lost structure.
Some organisms can regrow damaged or lost body parts like a starfish. Regeneration is the process that uses cell division to regrow body parts. Regeneration is the ability to replace damaged or missing body parts. For example, once an Elk looses its antlers, each year, they grow new ones.
Regeneration is the type of asexual reproduction where lost body parts can be replaced. This process allows an organism to regrow or repair body parts that have been damaged or lost. Examples include the regrowth of starfish arms or tails in certain lizard species.
Regeneration tissue refers to new tissue that forms to replace and repair damaged or lost tissue in living organisms. It can occur naturally in some organisms, like starfish or salamanders, allowing them to restore lost body parts. In humans, regenerative medicine aims to harness the body's natural healing processes to repair damaged tissues and organs.
no
No.
The importance of the mitosis in your human body is that mitosis heals you when you break a bone, get a cut or get injured because it replaces the cells that were lost.
They can grow back their arms.
yesh
No, unlike smaller reptiles and amphibians, crocodilians do not have the ability to regenerate lost limbs. I would assume they rarely ever need to though, not many things are able to take on crocodiles, especially the Nile and Estuarine varieties.