With their long arms and their ability to squirt ink, octopuses and squids are hard to tell apart! This title dives deep into the physical and behavioral differences between the two ocean animals, exploring their body parts, where they live, and more. A side-by-side feature lets readers review and compare the creatures on their own.

From world-renowned biologist and primatologist Frans de Waal comes this groundbreaking work on animal intelligence destined to become a classic. What separates your mind from an animal's? Maybe you think it's your ability to design tools, your sense of self, or your grasp of past and future―all traits that have helped us define ourselves as the planet's preeminent species. But in recent decades, these claims have been eroded-or even disproved outright-by...