5 Octopuses are experts in solving puzzles and problems. They can escape from sealed jars!

While the exact extent of their intelligence is debatable, they do have a short and long-term memory. They can distinguish between different shapes and patterns. They can also learn from observation. Octopuses often break out of their aquariums. They have also boarded fishing boats to eat crabs.(source)

4 The blue-ringed octopus carries enough venom to kill 26 adult humans within minutes.

The deadly bite of the Blue-ringed Octopus is often tiny and painless. It contains tetrodotoxin, histamine, tryptamine, octopamine, taurine, acetylcholine and dopamine. It causes severe and sometimes total paralysis and death within minutes. The good news is that a human runs the risk of being bitten only if he/she corners and touches the Octopus.(source)

3 There is a kind of Octopus that an arm that works as a detachable, locomotive penis.

The Argonaut or Paper Nautilus is a small species of Octopus. In this species, the male’s third left arm develops into a detachable penis. The fun fact is that even when detached, the penis can swim to the female all by itself, where it clings to the female Octopus’s vaginal cavity.(source)

2 The abyssal octopus, also known as Vampire Squid (Vampyroteuthis infernalis) is covered in light-producing organs called photophores.

The Vampire Squid (Vampyroteuthis infernalis) is a member of the cephalopod group among Octopuses. they shares similarities with both squid and octopuses. It can produce light from large complex photophores at the bases of its fins and from the luminous fluid released by the arm tips.(source)

1 Some biologists think that if Octopi were more social creatures, they’d out-compete humans and become the dominant species of the planet.

Scientists have found far more advanced intelligence in octopus than we ever thought. A scientist suggested it’s intelligence could evolve with time. Cephalopods manipulate objects and use tools. They also build other structures if given the time.(source)