Following is not a sexual perversion -
Sadism
Masochism
Undinism
Bestiality
Ref: Textbook of forensic medicine and toxicology (V.V.Pillay) 17th edition , page no. 411 Bestiality is unnatural sexual offence involves sexual intercourse with a lower animal. The animals mainly selected include cows, mares, bitches, female sheep etc.(by males) and bulls horse, dogs, dogs, and male sheep(by female).
Sexual offences and infanticide