- Order: Saurischia
- Suborder: Wyvern Feet
- Infraorder: Armor Shell Wyvern
- Superfamily: Flying Wyvern
- Family: Rath
Rathian fear almost nothing else found in their habitat range, except other large predators and Elder Dragons. She may prey on lesser wyverns, particularly bird wyverns such as Jaggi, Velociprey and their alpha forms such as Bullfango. Only certain predators in her territory are strong enough to fight back if a Rathian is attacking. Foremost among them are other wyverns and large monsters that live in the same habitat. Such predators include Lagiacrus, Seregios, Tigrex, Gore Magala, Brachydios, Deviljho, Stygian Zinogre, Agnaktor, Lavasioth and the rare Rajang.
Dreadqueen Rathian have many of the same adaptions as Rathian, however, there is a few differences between them. Dreadqueen Rathian are known to have purple-colored scales, giving them their additional name, Dreadqueen. Their scales are tainted this color due to the immense amount of poison they produce, making their scales and shell deadly to touch with bare hands. This overflow of poison is due to them living in certain environments, which have altered their poisons. Unlike normal Rathian, Dreadqueen Rathian are able to scatter the thorns on their tail on to the battlefield, like rose pedals, making an area hazardous. These thorns leave behind poisonous clouds on the ground. If this wasn't deadly enough, Dreadqueen Rathian poisons come in three different forms; Poison, Noxious Poison, and Deadly Poison. Much like Dreadking Rathalos, Dreadqueen Rathian has stronger fire-breathing abilities.
Dreadqueen Rathian are truly dangerous monsters. The Hunter's Guild only allow hunters with special permits to hunt them down.