Today, octopuses? octopi? Whatever they are called, they are widely considered one of the smartest animals in the world. They have been seen navigating mazes, opening containers, escaping enclosures, ...

We named him Squirt – not because he was the smallest of the 16 cuttlefish in the pool, but because anyone with the audacity to scoop him into a separate tank to study him was likely to get soaked.

In the new Prime documentary series “Octopus!” actress Phoebe Waller-Bridge spends an hour and a half narrating a story about an octopus named Doris that sets out on her own, falls in love and ...