Animal/Cattle Mutilation In the mid-1970s, reports of scattered animal mutilations in western and mid-western states concerned many people. The FBI was asked to investigate, but was unable to do so because of a lack of jurisdiction (except when such mutilations were found on Indian lands). These files consist mainly of press clippings and correspondence concerning the issues between 1974 and 1978. Some information in these documents may have been redacted for security purposes.