Pollination, predation, parasitism, symbiosis, biological interactions between species are incessant and essential to nature. They are even at the origin of the incredible biodiversity of our planet. To take advantage of others and often do what they cannot do themselves, living beings have had to evolve, innovate and invent. Imagination in this field knows no limits. For example, insects are the ones who gather flowers. They feed themselves and ensure the multiplication of flowers by dispersing pollen. Butterflies that lay their eggs only on certain species of plants. Trees that allow mushrooms to flourish in the shade of their branches. Each species is dependent on another, and to touch one of them is to endanger all the others.