Did you know that a fully grown human brain is equal to the weight of one 12-week-old kitten? Or that it can think at 41/2 times the speed of a cheetah? How about the fact that an octopus brain reaches to the tips of its tentacles, or that the emerald jewel wasp can use mind control over other insects? Filled with interesting facts, immersive at-home activities, and fun optical illusions, This Book Is Full of Brains will make kids fall in love with all types of brains--whether they be human, dinosaur, or robot!