Octopuses break so many biological expectations that scientists still struggle to explain how they ended up this way through normal evolution. From how their brains work to how their bodies heal, ...

This octopus can brood its eggs for nearly four years without eating. Here’s how this biological extreme has reshaped how scientists view life in the deep.

Add Yahoo as a preferred source to see more of our stories on Google. Dumbo octopuses live in the deep open ocean down to depths of at least 13,100 feet (4000 m) and perhaps much deeper, making this ...

Octopuses may have big brains because of environmental – not social – factors. Large brains in mammals are generally thought to be linked to social behaviour, an idea known as the social brain ...