Octopuses are fascinating animals – and serve as important model organisms in neuroscience, cognition research and developmental biology. To gain a deeper understanding of their biology and ...

A two-month-old octopus tries to unscrew the lid of a jar to get hold of its content, a crab, at Denmark's Aquarium in Copenhagen in 2004. Credit - Jorgen Jessen—AFP/Getty Images As predictable as the ...

Octopuses possess a unique three-heart system that allows them to survive temporary cardiac pauses, a feat impossible for most animals. This, combined with their efficient haemocyanin oxygen carrier ...