Kobolds inhabit dragons’ lairs when they can but more commonly infest dungeons, gathering treasures and trinkets to add to their own tiny hoards.
As egg-laying creatures, the kobolds’ birth rate is higher than any other humanoid race. They mature quickly, and can live to be “great wyrms” more than a century old. Despite the abundant numbers of their young, many kobolds perish before they reach the end of their first decade. Physically weak, they are easy prey for competent predators in the dark and dangerous realms where they reside. This vulnerability underlies their cowardice and forces them to band together. Their superior numbers can win battles against powerful adversaries, but often with massive casualties on the kobold side.
Kobolds make up for their physical ineptitude with a cleverness for trap making and tunneling. Their lairs consist of low tunnels through which they move easily, but which make it difficult for larger humanoids to maneuver. Rather than face the claws, teeth, and blades of their enemies head-on, kobolds riddle their lairs with rock falls, nets, concealed pits, and other traps designed to eliminate or ensnare their foes before they get close. These lairs are efficient and orderly places where the strong rule over the weak, whether by competence or cruelty.