The Ironbelly is the biggest dragon. It has even been known to weigh six tonnes. It is slower in flight than the Vipertooth or the Longhorn. But that doesn't make it any less dangerous. It is capable of crushing dwellings. The Ironbelly's scales are metallic grey and they have red eyes. They also have long, vicious talons. They have been subject to observation by Ukrainian wizarding authorities after one carried off a boat in 1799.