Catamenia is a Finnish black metal band founded in 1995 by Riku Hopeakoski and Mika Tönning in Oulu. They have been signed to Massacre Records since their first full-length release Halls of Frozen North in 1998. As of 2010, they have released nine albums, one EP, and one DVD. They are known for frequent usage of wolves in their album art. Catamenia means “menstruation.” The band did not know about this until a fan pointed it out to them after the release of their debut album. Catamenia is also a kind of bird.