The derivative noun "zoosexuality" is sometimes used by self-identified zoophiles in both support groups and on internet-based discussion forums to designate sexual orientation manifesting as romantic or emotional involvement with, or sexual attraction to, non-human animals.
Some zoophiles and researchers draw a distinction between zoophilia and bestiality, using the former to describe the desire to form sexual relationships with animals, and the latter to describe the sex acts alone.
The terms are often used interchangeably, but some researchers make a distinction between the attraction (zoophilia) and the act (bestiality).
Williams and Weinberg also quoted a British newspaper saying that zoophilia is a term used by "apologists" for bestiality.
The Kinsey reports rated the percentage of people who had sexual interaction with animals at some point in their lives as 8% for men and 3.6% for women, and claimed it was 40–50% in people living near farms, but some later writers dispute the figures, because the study lacked a random sample in that it included a disproportionate number of prisoners, causing sampling bias.
Zoosadism specifically is one member of the Macdonald triad of precursors to sociopathic behavior.
which he defined as a sexual attraction to animal skin or fur.
Confusing the matter yet further, writing in 1962, Masters used the term bestialist specifically in his discussion of zoosadism.