Can you remember what you had for dinner last weekend? That ability is a function of episodic memory, and how well we can recall the time and place of specific events typically declines with age.

Cuttlefish, with their blimp-shaped bodies and eight squiggly arms, don’t age like people do. Sexual maturity tends to come late for them—about three-quarters of the way through their two-year lives, ...

Cuttlefish have been caught on film walking like crabs by moving their tentacles in novel ways. Kohei Okamoto at the University of the Ryukyus in Okinawa, Japan, and his team first spotted pharaoh ...