Funnel-web spiders are a group of spiders known for their distinctive funnel-shaped webs. These webs are typically built in sheltered areas, such as under rocks or in leaf litter, where the spider can hide and wait for prey. They are primarily found in Australia and are known for their aggressive behavior when threatened. There are several species of funnel-web spiders, with the most famous being the Sydney funnel-web spider. This species is notable for its potent venom, which can be dangerous to humans. However, funnel-web spiders play an important role in controlling insect populations in their ecosystems.