Just like vertebrates, cephalopods — such as octopuses and squid — have elaborate brains. Neuroscientists are flocking to them for insights into how intelligence evolved.

This unassuming octopus pairs bacterial chemistry with evolutionary efficiency to deliver one of the most powerful defenses in all of the ocean.

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images / Mauricio Handler In the new Prime documentary series “Octopus!” actress Phoebe Waller-Bridge spends an hour and a ...

The octopus is an exceptional organism with an extremely complex brain and cognitive abilities that are unique among invertebrates. So much so that in some ways it has more in common with vertebrates ...

Researchers studying a deep-sea octopus called Muusoctopus robustus have found thousands of the animals congregating at hydrothermal springs near an underwater mountain off California, raising fresh ...

An octopus at the Seattle Aquarium is making headlines for trying to bust out of its enclosures for a taste of the vertebrates life. The cephalopod scaled its enclosure Feb. 26 and stretched three ...

Amazon Prime Video's "Octopus!" is a two-part documentary special narrated by Phoebe Waller-Bridge, premiering May 8 Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since ...

Three hearts; blue blood; no skeleton; arms like tongues. These are just some of the alien features of octopuses, squid and cuttlefish — members of the cephalopod family. The outlandish list continues ...