it just does its nature
No.
No they can not
They can grow back their arms.
They can certainly grow new limbs but the tail is a major body part. A small part may grow back if only slightly damaged but with major damage it is more likely the crayfish will perish.
non denomination
No. A leopard is able to grow back lost skin or tissue, but if a leopard loses a limb, it will not grow back.
Molting occurs when and because they need to grow. Crayfish have exoskeletons which means they have a hard, protective shell on the outer layer of their body. They need to grow out of their shells to gradually get bigger.
No, they do not grow back. Yes, they do.
Yes, it will grow back.The body you see is actually a shell that the hermit crab sheds to grow. you can get all your hermit crab info on HERMIT-CRABS.com
Few animals can, but those that can go through a process called regeneration.
yes a millipede can grow back
Yes. Your nails will always grow back, even if you lose them completely.