In history, homosexuality has long been presented as a punishable, shameful vice. Those who oppose it or have opposed it, especially Christian theologians, had, among other things, an argument which they considered infallible: if homosexuality between animals does not exist, it is indeed proof that humans should not indulge in this unnatural love. An enlightened reasoning, which shines only by its inaccuracy.

In fact, mating between individuals of the same sex is widespread in the animal kingdom. Well, inevitably, when you observe it for the first time on the basis that it cannot exist, it upsets preconceived ideas a bit. In 1834, for example, the entomologist August Kelch had great difficulty explaining the sexual relations of two male beetles – a subfamily of beetle insects – who were enjoying themselves before his amazed eyes.

Eventually, he concluded that this must have been an act of rape, where “the bigger and stronger of the two had imposed itself on the smaller and weaker”. A beautiful pirouette, dismantled a few decades later by scientists without blinkers.