(CNN) -- Considered by biologists to be some of the most intelligent invertebrates, octopuses are normally playful and inquisitive. But an Australian geologist saw another side to the marine creatures ...

An octopus attacked a 6-year-old boy at an interactive exhibit at the San Antonio Aquarium, according to his mother — who also claimed workers brushed off the incident involving what they called the ...

Scientists have discovered that octopuses don't have a dominant arm, but they more often use their front arms for tasks.