Self Decaptitating Pumpkin

Self Decaptitating Pumpkin
So cool! This pumpkin is removing its own head. He is self-decapitating!

I googled self decapitation to see if there was an obscure word for such a thing. There doesn't appear to be a word for it, but there is an animal that does it... and survives. Here is the next thing you will read: https://www.nytimes.com/2021/03/08/science/decapitated-sea-slugs.html