This dive captures an octopus making physical contact. The animal responds instinctively, not aggressively. Tentacles grip ...

A video of an octopus changing colors while it sleeps is raising a lot of questions about the mysterious sea creatures. The footage aired in the new PBS documentary titled "Octopus: Making Contact." ...

Octopuses are remarkably intelligent, oftentimes comparable to critical thinking exhibited by humans, particularly that of a 3-year-old. While these cephalopods are still under research, their ...