Is it possible for humans and chimpanzees to interbreed?
Sex, we are told, is pleasurable. That's because most scientific accounts of sexual behaviour rest upon evolutionary explanations rather than the more immediately relevant mental and emotional experiences. To say that we have sex because it helps us to preserve our genetic legacies would be entirely accurate, but the more fleeting, experiential, pleasurable aspects of that most basic of social urges would be missing. It would be like staring at a painting with half the colour spectrum removed from it. One thing we have been curious about, though, is whether we are the only species that experiences sexual pleasure.
Among his more surprising findings—both then and now—was that 8 percent of the men he interviewed reported having engaged in sexual activity with an animal. In a recent survey I conducted on the sex fantasies of 4, Americans , I found that 1 in 5 participants reported having fantasized about what it would be like to get it on with an animal at least once before. This study included zoophiles, all of whom were recruited online and asked about their frequency of sex with animals, their beliefs about zoophilia, and their sexual preferences and practices.