Lucanidae, commonly known as stag beetles, are a family of insects characterized by their large mandibles, which resemble antlers. These beetles are found in various habitats, including forests and gardens, and are most active during the warmer months. They are known for their striking appearance, with many species exhibiting vibrant colors and unique shapes. Stag beetles undergo complete metamorphosis, transitioning from egg to larva, pupa, and finally to adult. The larvae typically feed on decaying wood, contributing to the decomposition process. Some species, such as the Japanese stag beetle, are popular in the pet trade due to their impressive size and appearance.