All the dragons known to the hairy hooligans tribe are grouped into one of the seven classes.
These are hotheaded dragons with dangerous fire. They include Terrible Terror, Monstrous Nightmare, FireWorm and Typhoomerang.
Boulder class dragons are tough and eat rocks. They include the Gronckle, Whispering Death and the Screaming Death.
Dragons in this class are sneaky and have multiple heads. They include the Hideous Zippleback and the Snaptrapper
The dragons of this class have a sense of vanity and they also possesses a sharp part of body. Members of this class are the Deadly Nadder, Timberjack and Speed Stinger.
Tidal class dragons live in the deep waters of the ocean. The Scauldron and the Thunder Drum are classed here.
Little is known about the dragons in this class. They include Changewing, Smothering Smokebreath and possibly the Flightmare.
Every dragon in this class is characterized by blazing speed, vice like jaw strength and extreme intelligence. The Night Fury and the Skrill are classed here.
- These classes may not only be the seven in the future.