 There have also been other groups that have caused similar damage as the ELF, within 2001 reports that "eco-terrorist" attacks, known as "ecotage", had increased.These included the ELF, the ELA, and another name being used – the "Environmental Rangers" who use similar tactics.Activists have also used the names "The Moles", "The Grey Wolves", "Westcountry Wildlife Cell", "Eco-Animal Defense Unit", and "Radical Brigades for Ecological Defence", as well as others.