About 2 weeks.
live for a long time that's what I've been told
jh
im not not shure if you mean how long do cockroaches live without a head, but if so i read they can last about week.
A mantis can live 1 day and a half without his head.
it stays on until your not breathing
one year
7 days
1 sec
1 second
5 years
An empty beer bottle. Long neck, but the head has been drunk.
This condition known as anencephaly happens to malformed babies but they do not survive. Chickens have been known to run around for a long time after it's head has been severed