Cockroaches can live upto one week without their heads. They can survive becaus they have an open circulatory system and do no rely on a central brain to control their bodily functions.
Flatworms are simple inverterate that can regenerate their entire bodies, including their heads. This means they can technically live indefinitely without a head.
This jellyfish is known as the immortal jellyfish because it can revert back to its sexual stage after reaching maturity. This means they can potentially live forever.
They dont have a central brain, so they can survive even if their heads are removed.
They are tiny freshwater cnidarians that are known for their ability to regenerate. They can be cut into multiple pieces and each piece will grow into a new hydra.
They are flatworms that are also known for their remarkable regenerative aibilities. They can also regenerate their brains.
They dont have a head, but they do have a brain region that is located in their front segment. They can survive for a brief period without this brain region.
Salamandars can regenerate lost limbs. Some species can also regenerate heart and brains.