Spy bots are small bots used to gather information. Their sizes vary. The smallest are insect sized and shaped, such as bug bots and fly bots. Cat shaped are larger. Bird bots are frequently used. They can be entirely cybernetic, entirely organic or a combination of both. Cybernetic inside, covered with an organic "skin" is widely used for its stealth capability. Spy bots are rarely armed due to their small size, but are sometimes used for bio attacks.