What eat termites?
Termites are eaten by various species of birds. Other predators of termites include many types of spiders and other large bugs.
Yes, termites eat wood. Termites have some kind of bacteria living in their gut, that produces enzymes that break down cellulose (the fiber that gives structure to wood), into carbohydrates, for the termites and the bacteria to use. So yes, termites eat wood, but in another way, they're actually eating carbohydrates.