The arm of an octopus is called a tentacle.
About 12 Feet Long
Yes. It can regrow another arm. But the severed arm will not regrow into another octopus.
By what i researched so far it does!
yes
A octopus has no bones
Yes
Maybe, it only works on certain kind of octopus
Yes, an octopus can regrow an arm that gets torn off.
The largest well-documented octopus known was a specimen of Enteroctopus dofleini (the North Pacific giant octopus). Somewhat questionable records exist claiming that this species can have arm lengths of about 30 feet.That would be about one car per arm, so 8.
Adult octopus weigh around 33 lbs, with an arm span of up to 14 ft.
It becomes a septapus.