Animal sex websites
"Bestiosexuality" was discussed briefly by Allen (1979), but never became widely established.
Peer reviewed research into zoophilia in its own right started around 1960.
Martin Duberman has written that it is difficult to get a random sample in sexual research, and that even when Paul Gebhard, Kinsey's research successor, removed prison samples from the figures, he found the figures were not significantly changed.
By 1974, the farm population in the USA had declined by 80 percent compared with 1940, reducing the opportunity to live with animals; Hunt's 1974 study suggests that these demographic changes led to a significant change in reported occurrences of bestiality.
Confusing the matter yet further, writing in 1962, Masters used the term bestialist specifically in his discussion of zoosadism.
Stephanie La Farge, an assistant professor of psychiatry at the New Jersey Medical School, and Director of Counseling at the ASPCA, writes that two groups can be distinguished: bestialists, who rape or abuse animals, and zoophiles, who form an emotional and sexual attachment to animals. Williams and Martin Weinberg studied self-defined zoophiles via the internet and reported them as understanding the term zoophilia to involve concern for the animal's welfare, pleasure, and consent, as distinct from the self-labelled zoophiles' concept of "bestialists", whom the zoophiles in their study defined as focused on their own gratification.