system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is a Lizard able to detach its tail on reflex?

I saw another’s post on here showing a detached lizards tail. It’s amazing to think they’re able to do this instantaneously and wondered what enables them to do this? If they’re able to continue living a reasonably normal life? How long does it take them to regrow? Any info would be much appreciated ))
gpt
So this is called Caudal Autotomy, it differs among species but the basic idea is that a lizards tail will be grabbed by a predator and, due to an intentional weakness in the lizards vertebrae, the tail will rip off allowing the lizard to escape. It doesn't bleed to death because sphincter muscles contract at the wound and prevent blood loss.