In the manga "The Saga of Darren Shan", the titular character is fascinated by spiders. He kept them as pets until he killed one that he got when he was nine years old. He used to let them go into his mouth and he would imagine them eating him from the inside out. Normally, the spiders would stay with him for about a day or two, but some lasted longer. Later on, we find out that he can communicate with spiders.