2 books · Ages 8–12 · Chapter Books
MIT Kids Press: Animal Minds is a 2-book series for ages 8–12 by Stephanie Gibeault. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Innovative Octopuses, Half-Brained Birds, and More Animals with Magnificent Minds and Calculating Chimpanzees, Brainy Bees, and Other Animals with Mind-Blowing Mathematical Abilities are great first picks.
No particular order needed — browse and pick what catches your eye.