Wonderful weaving of stories and studies of the full range of animal intelligences, a history of the author's field of ethology (evolutionary cognition), and a barrage of reminders that human researchers and thinkers spent a long time convinced our own intelligence is of a separate kind by changing definitions and ignoring counter-examples (in both humans and animals). Our mental overlap with animals is remarkable, and embracing this should help us learn much more about how our smart animal brain&perception&learning came to be.