Octopuses tend to catch your attention the moment you learn anything real about them. They don’t fit the neat biological patterns most animals follow, and that’s precisely what makes them so ...

The octopus, one of Earth’s oddest and most enduring creatures – they were here before dinosaurs – is spotlighted April 21 with NatGeo’s eye-opening “Secrets of the Octopus.” These incredibly unique ...

Did you know octopuses are highly intelligent animals with the ability to problem-solve complex puzzles – and even change color? They have three hearts and blue blood, helping them survive in deep ...

Like most vertebrates, humans only have one heart, which is usually located near the front and middle of the chest, slightly to the left of the breastbone. The heart’s primary function is to pump ...