Lift the flaps and open gatefolds to discover the animal kingdom's best builders. Do bees need cement mixers to make hives? Do beavers use cranes to construct dams? Of course not! Like many animals, they're architectural geniuses that rely on their instinct and habitat alone to create their grand designs. From spider webs and rabbit warrens, to bird nests and ant colonies, we reveal the secrets to these incredible structures and how they're built.