used. "Bestiosexuality" was discussed briefly by Allen (1979), but never became established. The term "zoophilia" was introduced into the field of research on sexuality in  Psychopathia Sexualis  (1886) by  Krafft-Ebing , who described a number of cases of "violation of animals (bestiality)", [ 5 ]  as well as "zoophilia erotica", [ 6