Animal sexual behaviour however, is proving to be false as, "most hormones don’t influence behaviour directly. Rather, they affect thinking and emotions in variable ways (Azar, 40)." There is much more involved in sexual behaviour in the mammalian animal than oxytocin and vasopressin can explain. It is often assumed that animals do not have sex for pleasure, or alternatively that humans, pigs, bonoboes (and perhaps dolphins and one or two more species of primates) are the only species that do. This is sometimes stated as "animals mate only for reproduction". This view is considered a misconception by some scholars. Jonathan Balcombe argues that
How to Have Sex in an Epidemic the increasingly critical state of the health crisis and their shared belief in what Callen described as the danger of "put[ting] political considerations over the tragedy of even a single gay man's death." Before the AIDS epidemic, condoms were mostly advertised and used for preventing pregnancies and therefore were not considered a viable safe sex or STD prevention tool among the LGBT community: David France estimates that less than 1% of men who have sex with men in New York City used them regularly in the 1970s, despite the fact that many other sexually transmitted diseases, including cytomegalovirus and hepatitis