Octopus

Octopuses are highly intelligent creatures that are millions of years old, and they fascinate me. They have three hearts and eight tentacles.Two thirds of its neurons are located in its tentacles, not in its head. The researchers found that when an octopus loses a tentacle, the detached tentacle still swims off on its own, even grabbing food and pointing it where its mouth would be if the tentacle was still attached to the body.
They are emotional and able to develop their own unique personality.
When they are in danger, they release a black cloud that obscures the predator’s view and allows the octopuses to escape.