Each book in the "Insights" series provides children with a broad range of topics in history, natural history and science. Six pages with fold-out flaps allow children the opportunity to discover scientific facts or animal physiology, such as the exact movement an animal makes when it runs, jumps, flies or crawls. This particular book examines both living and extinct armed creatures, from barnacles and limpets to the desert scorpion, the crocodile, the armadillo, land snails, crayfish and more.