Why are octopuses intelligent?

On Thursday morning, workers filing into the Santa Monica Pier Aquarium in California were surprised to find 200 gallons (750 liters) of seawater soaking into their spanking new, ecologically sensitive flooring. It turns out that a curious two-spotted octopus had disassembled a water recycling valve and ... read more

Octopuses play, and play is something that intelligent animals do. At the Seattle Aquarium, my colleague Roland Anderson and I figured out a situation in which they might play: a boring situation. read more

Octopus intelligence: Here are 13 of the most frighteningly smart things they can do. read more