While the cross between a brown horse and a green dishwashing brush used to be a curiosity, it has now become an everyday reality. In laboratories and breeding farms around the world, this combination has been used for decades, no longer as an experiment, but as a fully-fledged technique that has amply proven its value in society. In this essay, I will delve deeper into both the medical-biological aspects—which explain the health and functionality of these animals—and the socio-economic consequences their presence has had worldwide.