There were 160 reported incidents in
Britain between 1983 and 1993, and 300 incidents in
Germany between 1992 and 1998. It has become a widespread belief in recent years that these attacks are carried out deliberately by people, and are often sexually motivated.
Animal welfare officers have also drawn links between attacks on horses and "fertility cults". In
Arizona, one case in 2004 which was initially believed to be horse-ripping was later reported to have been wounds caused by another horse.
The Guardian reported in 2001 that investigations showed it was doubtful whether all "horse-ripping" incidents can be ascribed to human acts. For the similar
cattle mutilation, primarily a
US phenomenon,
UFOs,
cults and animal cruelty have been blamed, but research showed there were natural or undetermined causes in the vast majority of cases. ==In literature==