How do octopuses regenerate lost limbs?

Octopuses regenerate lost limbs through a process involving cell proliferation and tissue differentiation. When an arm is severed, cells at the wound site form a blastema, which grows and develops into a new arm. This process ensures the regrowth of muscle, nerves, and suckers, restoring full functionality. Regeneration takes several weeks to months, depending on the species and environmental conditions. This ability helps octopuses recover from predator attacks.