Spiders use their webs to live in. They spit silk from their body to create a web. They have stuff in their body that makes the silk sticky so then the spiderweb will stick together. The web is also really sticky because it would be useful when spiders catch their prey. The spiders would not get stuck to the web because spiders have fur on their legs. Spiders also have fur on their legs so then they could climb up walls. Spiderwebs are transparent so flies and other bugs that spiders eat would not be able to see the web and get stuck on it.