It doesn’t usually have rings either, they only appear when it’s pissed. In other words, someone is in major trouble.
Octopuses are quite adept at solving problems. Such as "how to escape from a sealed jar." -- 22 Octopus Facts That Are Definitely Worth Ogling タコのすごい能力！- The terrible ability of the octopus!
This infographic shows all the reasons the octopus is the coolest animal ever