Octopuses use three hearts to keep their bodies well circulated.
Despite being mollusks, octopuses have a complex genome that is nearly the size of the human genome.
Octopus arms have a mind of their own: When they're amputated, the arms live on for at least an hour, moving around and grasping things.
I know that gorillas and chimpanzees can learn sign language and use it to communicate. But can other animals use sign language, too?
Did you know that octopuses have even been seen engaging in play behavior?
It seems the smartest member of the invertebrate world has learned how to use a tool
It would only take a single oversized meal to kill or cause brain injury to a squid.
The octopus tentacle surprisingly acts in much the same way as the human arm when transferring tasty morsels from sucker to mouth.
What creature has more than one heart? Find out on this Moment of Science.