刺猬 (cì wèi), or hedgehog, is a small mammal known for its distinctive spiny coat. These spines are modified hairs that provide protection from predators. Hedgehogs are primarily nocturnal and are found in various habitats, including gardens and forests. They are insectivores, feeding mainly on insects, worms, and small invertebrates. In many cultures, the刺猬 is seen as a symbol of defense and resilience. They can curl into a tight ball when threatened, using their spines as a barrier. Hedgehogs are also popular in pet ownership, with some people keeping them as exotic pets due to their unique appearance and gentle nature.